I’ve installed overlay-scrollbar and overlay-scrollbar-gtk2 (not sure if it is related actually)
sudo apt install overlay-scrollbar overlay-scrollbar-gtk2
then I’ve tried to apply various values of com.canonical.desktop.interface scrollbar-mode (via dconf-editor) but I have no luck there.
Even Unity stopped using that kind of scrollbar once GTK+ started including its own version of overlay scrollbars. They are disabled in MATE, however. You can enable them with the environmental variable GTK_OVERLAY_SCROLLING.
You can do something like
export GTK_OVERLAY_SCROLLING=1; pluma
to open pluma with overlay scrollbars
or put it in a startup file like ~/.profile and log out to have it everywhere.
Now the appearance varies by the theme, so with the default theme the scrollbars aren’t narrow, they just disappear. Other themes have other looks.
no luck still, nothing is changed.
I’m not sure if I said it clear. I want to get those thin orange (it’s okay for me if color will be green) scrollbars with no arrows that I used to have in vanilla Ubuntu 16.04. I don’t know its proper name and if overlay-scrollbar is related to it.
Yes, that’s the overlay scrollbars thing. But development of the Ubuntu/Unity version has stopped a while ago, they don’t exist anymore. At some point, Canonical replaced them with a similar system from GNOME but I’m not sure they even exist anymore or are usable outside of GNOME 3.
EDIT: after checking, it was already the GNOME scrollbars that were used in 16.04. The Unity version was dropped in 15.10. Did you have them in Ubuntu MATE 16.04 or you only tried the main Ubuntu version at that time? I’m really not sure you can have them in MATE at all.
@terzag explained better than me. Basically, those were abandoned and the closest you could get now is re-creating them yourself with GTK+'s overlay scrollbars plus a different theme or custom CSS.
I never saw it in Ubuntu Mate but I check Mate not very often. I don't remember when and how I've got it but I'm sure it was with me for two last years. I believe I met it after upgrading from 14.04 to 16.04
I've tried to tune Ambient-MATE's CSS files a bit and I'm almost fine with it now
I love how easy it is to modify GTK+ 3 with CSS!
Which CSS files were you editing to get the thin scroll bars? I’m trying to recreate the same thing.
save this as HoverlayScrollbars.patch in you home directory:
diff -Naur /usr/share/themes/Ambiant-MATE/gtk-2.0/apps/panel.rc /usr/share/themes/Ambiant-MATE-HoverlayScrollbars/gtk-2.0/apps/panel.rc
--- /usr/share/themes/Ambiant-MATE/gtk-2.0/apps/panel.rc 2017-08-18 19:09:03.000000000 +0500
+++ /usr/share/themes/Ambiant-MATE-HoverlayScrollbars/gtk-2.0/apps/panel.rc 2018-04-30 18:16:32.714100325 +0500
@@ -26,4 +26,4 @@
widget_class "*notif*" style "panel"
widget_class "*PanelApplet*" style "panel_default" # workaround for right click menu corrupted bg
widget_class "*Tray*" style "panel" # workaround for StarDict, gnubiff... tray icon bg
-class "GtkScrollbar" style "murrine-scrollbar"
+class "GtkScrollbar" style "scrollbar"
diff -Naur /usr/share/themes/Ambiant-MATE/gtk-2.0/gtkrc /usr/share/themes/Ambiant-MATE-HoverlayScrollbars/gtk-2.0/gtkrc
--- /usr/share/themes/Ambiant-MATE/gtk-2.0/gtkrc 2017-08-22 17:29:10.000000000 +0500
+++ /usr/share/themes/Ambiant-MATE-HoverlayScrollbars/gtk-2.0/gtkrc 2018-04-30 17:24:27.616872008 +0500
@@ -30,12 +30,10 @@
GtkScale::slider-length = 14
GtkScale::trough-side-details = 1
- GtkScrollbar ::has-backward-stepper = 1
- GtkScrollbar ::has-forward-stepper = 1
- GtkScrollbar ::min-slider-length = 15
- GtkScrollbar ::slider-width = 14
- GtkScrollbar ::trough-border = 0
- GtkScrollbar ::activate-slider = 1
+ GtkScrollbar::activate-slider = 1
+ GtkScrollbar::trough-border = 0
+ GtkScrollbar::slider-width = 13
+ GtkScrollbar::min-slider-length = 31
GtkScrolledWindow ::scrollbar-spacing = 0
GtkScrolledWindow ::scrollbars-within-bevel = 0
@@ -120,7 +118,7 @@
focusstyle = 3
handlestyle = 1
sliderstyle = 3
- scrollbarstyle = 0
+ scrollbarstyle = 2
stepperstyle = 3
toolbarstyle = 2 # 0 = flat, 1 = glassy, 2 = gradient
#rgba = TRUE
@@ -212,20 +210,42 @@
}
}
-style "murrine-scrollbar" {
- bg[NORMAL] = shade (0.99, @selected_bg_color)
- bg[SELECTED] = shade (1.03, @selected_bg_color)
- bg[ACTIVE] = shade (1.03, @selected_bg_color)
- bg[PRELIGHT] = shade (1.03, @selected_bg_color)
+style "scrollbar" = "button" {
+ xthickness = 2
+ ythickness = 2
- engine "murrine" {
- roundness = 0
- gradient_shades = {1.0, 1.0, 1.0, 1.0}
- border_shades = {1.05, 1.05}
- contrast = 0.4
+ bg[NORMAL] = @bg_color
+ bg[PRELIGHT] = shade (1.04, @bg_color)
+
+ bg[ACTIVE] = shade (0.96, @bg_color)
+
+ engine "murrine"
+ {
+ border_shades = {0.95, 0.90}
+ roundness = 20
+ contrast = 1.0
+ trough_shades = {0.92, 0.98}
+ lightborder_shade = 1.3
+ glowstyle = 5
+ glow_shade = 1.02
+ gradient_shades = {1.2, 1.0, 1.0, 0.86}
+ trough_border_shades = {0.9, 0.98}
}
}
+style "hscrollbar" {
+}
+
+style "vscrollbar" {
+}
+
+style "overlay_scrollbar"
+{
+ bg[SELECTED] = shade (1.0, @selected_bg_color)
+ bg[INSENSITIVE] = shade (0.85, @bg_color)
+ bg[ACTIVE] = shade (0.6, @bg_color)
+}
+
style "scale" = "button" {
bg[NORMAL] = @bg_color
bg[PRELIGHT] = shade (1.06, @bg_color)
@@ -688,9 +708,9 @@
class "GtkScale" style "scale"
class "GtkVScale" style "vscale"
class "GtkHScale" style "hscale"
-class "GtkScrollbar" style "murrine-scrollbar"
-class "GtkVScrollbar" style "murrine-scrollbar"
-class "GtkHScrollbar" style "murrine-scrollbar"
+class "GtkScrollbar" style "scrollbar"
+class "GtkHScrollbar" style "hscrollbar"
+class "GtkVScrollbar" style "vscrollbar"
class "GtkCalendar" style "calendar"
class "GtkInfoBar" style "infobar"
class "GtkIconView" style "iconview"
@@ -750,6 +770,10 @@
widget_class "*.<GtkList>.<GtkButton>.*<GtkLabel>" style "treeview_header"
widget_class "*.<GtkCList>.<GtkButton>.*<GtkLabel>" style "treeview_header"
+# Overlay scrollbar
+widget_class "*<OsScrollbar>" style "overlay_scrollbar"
+widget_class "*<OsThumb>" style "overlay_scrollbar"
+
# The window of the tooltip is called "gtk-tooltip"
##################################################################
# FIXME:
diff -Naur /usr/share/themes/Ambiant-MATE/gtk-3.0/apps/gnome-terminal.css /usr/share/themes/Ambiant-MATE-HoverlayScrollbars/gtk-3.0/apps/gnome-terminal.css
--- /usr/share/themes/Ambiant-MATE/gtk-3.0/apps/gnome-terminal.css 2017-08-18 19:09:03.000000000 +0500
+++ /usr/share/themes/Ambiant-MATE-HoverlayScrollbars/gtk-3.0/apps/gnome-terminal.css 2018-04-30 01:32:30.540488120 +0500
@@ -5,3 +5,9 @@
background-color: @dark_bg_color;
color: @dark_fg_color;
}
+
+terminal-screen-container scrollbar:hover,
+terminal-screen-container scrollbar:active {
+ background-color: alpha(@scrollbar_track_color, 0.4);
+ border-radius: 1px;
+}
diff -Naur /usr/share/themes/Ambiant-MATE/gtk-3.0/apps/mate-applications.css /usr/share/themes/Ambiant-MATE-HoverlayScrollbars/gtk-3.0/apps/mate-applications.css
--- /usr/share/themes/Ambiant-MATE/gtk-3.0/apps/mate-applications.css 2018-04-04 13:04:11.000000000 +0500
+++ /usr/share/themes/Ambiant-MATE-HoverlayScrollbars/gtk-3.0/apps/mate-applications.css 2018-04-29 23:43:13.245342962 +0500
@@ -484,6 +484,7 @@
border-width: 0px 0px 0px 0px;
}
+/*
#mate-menu.background scrollbar {
background-image: none;
border-style: solid;
@@ -514,6 +515,7 @@
background-color: transparent;
color: shade (@insensitive_fg_color, 0.6);
}
+*/
#mate-menu.background entry {
background-color: transparent;
@@ -701,6 +703,7 @@
background: none;
}
+/*
.background.brisk-menu scrollbar {
background-image: none;
border-style: solid;
@@ -740,6 +743,7 @@
.background.brisk-menu scrollbar.vertical .button.down:hover {
box-shadow: inset 0 1px shade(@dark_fg_color, 0.35);
}
+*/
.background.brisk-menu entry {
background-color: transparent;
diff -Naur /usr/share/themes/Ambiant-MATE/gtk-3.0/gtk-main.css /usr/share/themes/Ambiant-MATE-HoverlayScrollbars/gtk-3.0/gtk-main.css
--- /usr/share/themes/Ambiant-MATE/gtk-3.0/gtk-main.css 2018-03-19 14:26:40.000000000 +0500
+++ /usr/share/themes/Ambiant-MATE-HoverlayScrollbars/gtk-3.0/gtk-main.css 2018-04-30 19:01:43.082749066 +0500
@@ -157,12 +157,6 @@
@define-color scrollbar_track_color mix(@base_color, black, 0.1); /* #e6e6e6 */
-@define-color scrollbar_trough shade(@theme_bg_color, 0.98);
-@define-color scrollbar_slider @theme_bg_color;
-
-@define-color scrollbar_slider_bg_color shade(@theme_selected_bg_color, 0.99);
-@define-color scrollbar_slider_hover_bg_color shade(@theme_selected_bg_color, 1.03);
-
@define-color progressbar_fill_a shade(@theme_selected_bg_color, 1.07);
@define-color progressbar_fill_b shade(mix(@theme_selected_bg_color, green, 0.10), 0.91);
@define-color button_border_active shade(@theme_selected_bg_color, 0.95);
diff -Naur /usr/share/themes/Ambiant-MATE/gtk-3.0/gtk-widgets-assets.css /usr/share/themes/Ambiant-MATE-HoverlayScrollbars/gtk-3.0/gtk-widgets-assets.css
--- /usr/share/themes/Ambiant-MATE/gtk-3.0/gtk-widgets-assets.css 2017-08-18 19:09:03.000000000 +0500
+++ /usr/share/themes/Ambiant-MATE-HoverlayScrollbars/gtk-3.0/gtk-widgets-assets.css 2018-04-30 18:48:32.097615497 +0500
@@ -699,27 +699,3 @@
background-image: url("assets/slider-right-backdrop-disabled.png");
}*/
-/*************
- * scrollbar *
- *************/
-
-scrollbar.vertical button.up,
-scrollbar.vertical .button.up {
- -gtk-icon-source: -gtk-icontheme("pan-up-symbolic");
-}
-
-scrollbar.vertical button.down,
-scrollbar.vertical .button.down {
- -gtk-icon-source: -gtk-icontheme("pan-down-symbolic");
-}
-
-scrollbar.horizontal button.up,
-scrollbar.horizontal .button.up {
- -gtk-icon-source: -gtk-icontheme("pan-start-symbolic");
-}
-
-scrollbar.horizontal button.down,
-scrollbar.horizontal .button.down {
- -gtk-icon-source: -gtk-icontheme("pan-end-symbolic");
-}
-
diff -Naur /usr/share/themes/Ambiant-MATE/gtk-3.0/gtk-widgets.css /usr/share/themes/Ambiant-MATE-HoverlayScrollbars/gtk-3.0/gtk-widgets.css
--- /usr/share/themes/Ambiant-MATE/gtk-3.0/gtk-widgets.css 2018-04-04 02:30:05.000000000 +0500
+++ /usr/share/themes/Ambiant-MATE-HoverlayScrollbars/gtk-3.0/gtk-widgets.css 2018-04-30 19:03:23.010866182 +0500
@@ -909,10 +909,33 @@
background: none;
}
-.frame.flat,
+notebook.frame {
+ border: none;
+}
+
+/* XXX: this is a copy of the above; adding notebook.frame stack there didn't
+ * work */
+frame border, notebook.frame > stack {
+ border-radius: 3px;
+ border-width: 1px;
+ border-style: solid;
+ border-color: shade (@bg_color, 0.82);
+ border-image: none;
+ background: none;
+}
+
frame > border.flat,
-overlay > frame > border {
- border: none;
+.frame.flat {
+ border: none;
+}
+
+scrolledwindow > viewport.frame,
+frame > box > stack > scrolledwindow {
+ border-style: none;
+}
+
+frame > box.vertical > scrolledwindow.frame {
+ border-width: 1px 0px 1px 0px;
}
/***********************
@@ -2397,187 +2420,139 @@
* scrollbar *
*************/
+.scrollbar,
scrollbar {
- background-image: none;
- border-style: solid;
- border-color: @borders;
- -GtkScrollbar-has-backward-stepper: true;
- -GtkScrollbar-has-forward-stepper: true;
+ -GtkScrollbar-has-backward-stepper: 0;
+ -GtkScrollbar-has-forward-stepper: 0;
}
-scrollbar.vertical {
- border-width: 0px 0px 0px 1px;
- min-width: 13px;
+scrollbar slider {
+ background-color: @scrollbar_track_color;
}
-scrollbar.horizontal {
- border-width: 1px 0px 0px 0px;
- min-height: 13px;
+.scrollbar.vertical slider,
+scrollbar.vertical slider {
+ min-height: 25px;
+ min-width: 5px;
}
-/* broken firefox ignore background of trough */
-scrollbar.vertical {
- background-image: linear-gradient(to right,
- @scrollbar_trough,
- shade (@scrollbar_trough, 1.08));
+.scrollbar.horizontal.slider,
+scrollbar.horizontal slider {
+ min-width: 25px;
+ min-height: 5px;
}
-scrollbar.horizontal {
- background-image: linear-gradient(to bottom,
- @scrollbar_trough,
- shade (@scrollbar_trough, 1.08));
-}
-
-scrollbar trough {
- border-style: none;
- border-radius: 0;
- border-image: none;
+.scrollbar.vertical.slider:hover,
+scrollbar.vertical:hover slider {
+ min-width: 10px;
}
-scrollbar trough.vertical {
- min-width: 13px;
- background-image: linear-gradient(to right,
- @scrollbar_trough,
- shade (@scrollbar_trough, 1.08));
+.scrollbar.horizontal.slider:hover,
+scrollbar.horizontal:hover slider {
+ min-height: 10px;
}
-scrollbar trough.horizontal {
- min-height: 13px;
- background-image: linear-gradient(to bottom,
- @scrollbar_trough,
- shade (@scrollbar_trough, 1.08));
+.scrollbar.contents,
+scrollbar contents {
+ background-color: transparent;
+ background-image: none;
+ background-size: 0;
+ border: none;
+ border-radius: 0;
}
-/* Buttons */
-scrollbar.vertical button,
-scrollbar.vertical .button {
- min-width:13px;
- min-height: 16px;
- padding: 1px 0px;
+.scrollbar.trough,
+scrollbar trough {
+ background-image: none;
+ border: none;
}
-scrollbar.horizontal button,
-scrollbar.horizontal .button {
- min-width:16px;
- min-height: 13px;
- padding: 0px 1px;
-}
-
-scrollbar button,
-scrollbar button:hover,
-scrollbar button:hover:active,
-scrollbar button:disabled,
-scrollbar .button,
-scrollbar .button:hover,
-scrollbar .button:hover:active,
-scrollbar .button:disabled {
- border-style: none;
- border-image: none;
- border-radius: 0;
- background-image: none;
- background-color: transparent;
+.scrollbar:hover:backdrop,
+.scrollbar.dragging:backdrop,
+scrollbar:hover:backdrop,
+scrollbar.dragging:backdrop {
+ background-color: @backdrop_selected_bg_color;
}
-scrollbar button:hover:active,
-scrollbar .button:hover:active {
- background-color: alpha(shade(@scrollbar_trough, 0.8), 0.5);
+/* Adding margins, so actual visible size is: width - margin this allows to
+ * keep the slider smaller, but keeping few threshold pixels
+ */
+.scrollbar.vertical:hover:dir(ltr),
+.scrollbar.vertical:active:dir(ltr),
+scrollbar.vertical:hover:dir(ltr),
+scrollbar.vertical:active:dir(ltr) {
+ margin-left: 2px;
}
-scrollbar.vertical button.up,
-scrollbar.vertical .button.up,
-scrollbar.vertical button.up:hover,
-scrollbar.vertical .button.up:hover {
- box-shadow: inset 0 -1px shade(mix(@scrollbar_slider, @scrollbar_trough, 0.6), 0.87);
+.scrollbar.vertical:hover:dir(rtl),
+.scrollbar.vertical:active:dir(rtl),
+scrollbar.vertical:hover:dir(rtl),
+scrollbar.vertical:active:dir(rtl) {
+ margin-right: 2px;
}
-scrollbar.vertical button.down,
-scrollbar.vertical .button.down,
-scrollbar.vertical button.down:hover,
-scrollbar.vertical .button.down:hover {
- box-shadow: inset 0 1px shade(mix(@scrollbar_slider, @scrollbar_trough, 0.6), 0.93);
+.scrollbar.horizontal:hover,
+.scrollbar.horizontal:active,
+scrollbar.horizontal:hover,
+scrollbar.horizontal:active {
+ margin-top: 2px;
}
-scrollbar.horizontal button.up,
-scrollbar.horizontal .button.down,
-scrollbar.horizontal button.up:hover,
-scrollbar.horizontal .button.down:hover {
- box-shadow: inset -1px 0 shade(mix(@scrollbar_slider, @scrollbar_trough, 0.6), 0.87);
+.scrollbar.slider,
+scrollbar slider {
+ background-color: alpha(@selected_bg_color, 0.8);
+ border-radius: 1px;
}
-scrollbar.horizontal button.down,
-scrollbar.horizontal .button.down,
-scrollbar.horizontal button.down:hover,
-scrollbar.horizontal .button.down:hover {
- box-shadow: inset 1px 0 shade(mix(@scrollbar_slider, @scrollbar_trough, 0.6), 0.93);
+.scrollbar.slider:hover,
+.scrollbar.slider:active,
+scrollbar slider:hover,
+scrollbar slider:active {
+ border-radius: 2px;
+ margin: 0;
}
-scrollbar button,
-scrollbar .button,
-scrollbar button:hover,
-scrollbar .button:hover {
- color: @theme_fg_color;
+/* Adding margins, so actual visible size is: -GtkRange-slider-width - margin
+ * this allows to define some kind of proximity effect also on mouse-enter
+ */
+.scrollbar.vertical:dir(ltr):not(:hover):not(.dragging),
+scrollbar.vertical:dir(ltr):not(:hover):not(.dragging) {
+ margin-left: 7px;
}
-scrollbar button:disabled,
-scrollbar .button:disabled {
- color: @insensitive_fg_color;
+.scrollbar.vertical:dir(rtl):not(:hover):not(.dragging),
+scrollbar.vertical:dir(rtl):not(:hover):not(.dragging) {
+ margin-right: 7px;
}
-scrollbar button:hover:active,
-scrollbar .button:hover:active {
- color: @theme_fg_color;
+.scrollbar.horizontal:not(:hover):not(.dragging),
+scrollbar.horizontal:not(:hover):not(.dragging) {
+ margin-top: 7px;
}
-scrollbar.vertical slider,
-scrollbar.vertical .slider {
- min-width: 13px;
- min-height: 42px;
- margin: 0px -1px 0px -1px;
-}
-
-scrollbar.horizontal slider,
-scrollbar.horizontal .slider {
- min-width: 42px;
- min-height: 14px;
- margin: -1px 0px -1px 0px;
-}
-
-scrollbar slider,
-scrollbar .slider {
- background-color: @scrollbar_slider_bg_color;
- background-image: none;
- border-radius: 0;
- border-style: solid;
- border-image: none;
- border-color: shade(@scrollbar_slider_bg_color, 0.95);
- border-width: 1px;
+.scrollbar.slider:hover,
+scrollbar slider:hover {
+ background-color: alpha(@selected_bg_color, 0.85);
}
-scrollbar slider:hover,
-scrollbar .slider:hover {
- background-color: @scrollbar_slider_hover_bg_color;
+.scrollbar.slider:active,
+scrollbar slider:active {
+ background-color: @selected_bg_color;
}
-scrollbar slider:disabled,
-scrollbar .slider:disabled {
- background-color: shade(@scrollbar_slider_bg_color, 0.85);
- border-color: shade(@scrollbar_slider_bg_color, 0.75);
+.scrollbar.slider:backdrop,
+scrollbar slider:backdrop {
+ background-color: alpha(@backdrop_filling_bg, 0.8);
}
-scrollbar.vertical.fine-tune slider:hover:active,
-scrollbar.vertical.fine-tune .slider:hover:active {
- background-image: linear-gradient(to bottom,
- shade(@scrollbar_slider_hover_bg_color, 1.00),
- shade(@scrollbar_slider_bg_color, 0.94));
- border-color: shade(@scrollbar_slider_bg_color, 0.95);
+.scrollbar.slider:hover:backdrop,
+scrollbar slider:hover:backdrop {
+ background-color: alpha(@backdrop_filling_bg, 0.85);
}
-scrollbar.horizontal.fine-tune slider:hover:active,
-scrollbar.horizontal.fine-tune .slider:hover:active {
- background-image: linear-gradient(to right,
- shade(@scrollbar_slider_hover_bg_color, 1.00),
- shade(@scrollbar_slider_bg_color, 0.94));
- border-color: shade(@scrollbar_slider_bg_color, 0.95);
+.scrollbar.slider:active:backdrop,
+scrollbar slider:active:backdrop {
+ background-color: @backdrop_filling_bg;
}
/*******************
@@ -2585,10 +2560,11 @@
*******************/
.ubuntu-online-accounts.frame,
scrolledwindow.frame {
- border-top-color: shade (@bg_color, 0.84);
+ border-top-color: @borders;
border-right-color: shade (@bg_color, 0.76);
border-bottom-color: shade (@bg_color, 0.86);
border-left-color: shade (@bg_color, 0.76);
+ border-width: 1px;
border-radius: 0;
border-style: solid;
}
@@ -4020,6 +3996,7 @@
background-color: @osd_view_bg;
}
+/*
.osd scrollbar trough.trough {
background-color: @osd_scrollbar_trough;
}
@@ -4035,6 +4012,7 @@
.osd scrollbar trough.slider:active {
background-color: @osd_scrollbar_slider_active;
}
+*/
.osd iconview.cell:selected,
.osd iconview.cell:selected:focus {
diff -Naur /usr/share/themes/Ambiant-MATE/index.theme /usr/share/themes/Ambiant-MATE-HoverlayScrollbars/index.theme
--- /usr/share/themes/Ambiant-MATE/index.theme 2018-04-24 20:03:18.000000000 +0500
+++ /usr/share/themes/Ambiant-MATE-HoverlayScrollbars/index.theme 2018-04-29 23:48:27.129526169 +0500
@@ -1,13 +1,14 @@
[Desktop Entry]
Type=X-GNOME-Metatheme
-Name=Ambiant-MATE
-Comment=Ambiant MATE theme
+Name=Ambiant-MATE-HoverlayScrollbars
+Comment=Ambiant MATE with Hoverlay Scrollbars theme
Encoding=UTF-8
[X-GNOME-Metatheme]
-GtkTheme=Ambiant-MATE
-MetacityTheme=Ambiant-MATE
+GtkTheme=Ambiant-MATE-HoverlayScrollbars
+MetacityTheme=Ambiant-MATE-HoverlayScrollbars
IconTheme=Ambiant-MATE
CursorTheme=mate
CursorSize=24
ButtonLayout=menu:minimize,maximize,close
+X-Ubuntu-UseOverlayScrollbars=true
then run in the terminal:
sudo cp -r /usr/share/themes/Ambiant-MATE /usr/share/themes/Ambiant-MATE-HoverlayScrollbars
cd /usr/share/themes/Ambiant-MATE-HoverlayScrollbars/
sudo patch -p5 < ~/HoverlayScrollbars.patch
make sure you have overlay-scrollbar and overlay-scrollbar-gtk2 installed.
after that run mate-appearance-properties and select Ambiant-MATE-HoverlayScrollbars theme.
