Hi, I applied diff command to get (view) differences between two files.
I Executed this (first file is the original, second file is the modified file by @linux4me user):
diff /usr/share/themes/Ambiant-MATE/metacity-1/metacity-theme-1.xml ~/.themes/Ambiant-MATE-Laptop/metacity-1/metacity-theme-1.xml
And I get this output:
19,20c19,20
< <distance name="button_width" value="18"/>
< <distance name="button_height" value="20"/>
---
> <distance name="button_width" value="33"/>
> <distance name="button_height" value="45"/>
32,33c32,33
< <distance name="button_width" value="18"/>
< <distance name="button_height" value="20"/>
---
> <distance name="button_width" value="33"/>
> <distance name="button_height" value="45"/>
271c271
< <image filename="menu.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="menu.png" x="0" y="1" width="object_width" height="object_height"/>
274c274
< <image filename="menu_prelight.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="menu_prelight.png" x="0" y="1" width="object_width" height="object_height"/>
277c277
< <image filename="menu.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="menu.png" x="0" y="1" width="object_width" height="object_height"/>
280c280
< <image filename="menu_prelight.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="menu_prelight.png" x="0" y="1" width="object_width" height="object_height"/>
283c283
< <image filename="minimize_focused_normal.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="minimize_focused_normal.png" x="0" y="1" width="object_width" height="object_height"/>
286c286
< <image filename="minimize_focused_prelight.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="minimize_focused_prelight.png" x="0" y="1" width="object_width" height="object_height"/>
289c289
< <image filename="minimize_focused_pressed.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="minimize_focused_pressed.png" x="0" y="1" width="object_width" height="object_height"/>
292c292
< <image filename="minimize_unfocused.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="minimize_unfocused.png" x="0" y="1" width="object_width" height="object_height"/>
295c295
< <image filename="minimize_unfocused_prelight.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="minimize_unfocused_prelight.png" x="0" y="1" width="object_width" height="object_height"/>
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< <image filename="minimize.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="minimize.png" x="0" y="1" width="object_width" height="object_height"/>
301c301
< <image filename="maximize_focused_normal.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="maximize_focused_normal.png" x="0" y="1" width="object_width" height="object_height"/>
304c304
< <image filename="maximize_focused_prelight.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="maximize_focused_prelight.png" x="0" y="1" width="object_width" height="object_height"/>
307c307
< <image filename="maximize_focused_pressed.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="maximize_focused_pressed.png" x="0" y="1" width="object_width" height="object_height"/>
310c310
< <image filename="maximize_unfocused.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="maximize_unfocused.png" x="0" y="1" width="object_width" height="object_height"/>
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< <image filename="maximize_unfocused_prelight.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="maximize_unfocused_prelight.png" x="0" y="1" width="object_width" height="object_height"/>
316c316
< <image filename="maximize.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="maximize.png" x="0" y="1" width="object_width" height="object_height"/>
319c319
< <image filename="unmaximize_focused_normal.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="unmaximize_focused_normal.png" x="0" y="1" width="object_width" height="object_height"/>
322c322
< <image filename="unmaximize_focused_prelight.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="unmaximize_focused_prelight.png" x="0" y="1" width="object_width" height="object_height"/>
325c325
< <image filename="unmaximize_focused_pressed.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="unmaximize_focused_pressed.png" x="0" y="1" width="object_width" height="object_height"/>
328c328
< <image filename="unmaximize_unfocused.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="unmaximize_unfocused.png" x="0" y="1" width="object_width" height="object_height"/>
331c331
< <image filename="unmaximize_unfocused_prelight.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="unmaximize_unfocused_prelight.png" x="0" y="1" width="object_width" height="object_height"/>
334c334
< <image filename="unmaximize.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="unmaximize.png" x="0" y="1" width="object_width" height="object_height"/>
337c337
< <image filename="close_focused_normal.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="close_focused_normal.png" x="0" y="1" width="object_width" height="object_height"/>
340c340
< <image filename="close_focused_prelight.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="close_focused_prelight.png" x="0" y="1" width="object_width" height="object_height"/>
343c343
< <image filename="close_focused_pressed.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="close_focused_pressed.png" x="0" y="1" width="object_width" height="object_height"/>
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< <image filename="close_unfocused.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="close_unfocused.png" x="0" y="1" width="object_width" height="object_height"/>
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< <image filename="close_unfocused_prelight.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="close_unfocused_prelight.png" x="0" y="1" width="object_width" height="object_height"/>
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< <image filename="close.png" x="0" y="1" width="19" height="19"/>
---
> <image filename="close.png" x="0" y="1" width="object_width" height="object_height"/>
Note that second line is the text/values you need edit/set in your metacity-theme-1.xml file.
I hope this was useful for you!