By going to Preferences > All > Interface > Main Interface > QT
I found that we can change the colour of the volume slider. Since I never use volume above 100%, I changed the max volume displayed to 100%.
But when I went about to change the colour of the volume slider, I couldn't understand how it works. The default setting were as follows:
153;210;153;20;210;20;255;199;15;245;39;29
So, I changed the values, as desired, to these:
300;285;270;255;240;225;210;195;180;165;150;135
But I got this:
I wanted these colours:
Can anyone help me?