Colour calibration for monitor, eyesome doesn't seem to run

I thank you in advance. Hopefully you will get to writing it soon. I wish I could program, but alas, I'm not a coder. (I do HTML that's all)

I noticed the following in the terminal window while making changes to color calibration

mickee@mickeymouse2:~$ sudo eyesome-cfg.sh
[sudo] password for mickee: 
/usr/local/bin/eyesome-src.sh: line 568: /sys/class/backlight/xrandr/brightness: No such file or directory

maybe that's why it isn't working?

using xgamma

mickee@mickeymouse2:~$ xgamma -gamma 1.1
-> Red  1.200, Green  1.200, Blue  1.200
<- Red  1.100, Green  1.100, Blue  1.100

anyway to just adjust the blue?

I figured it out, using xgamma -bgamma 1.1

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