Android Question Color Picker - how to use?

[JWB]

I've got my B4A code on the screen in the Editor, and say I want to change the color of all the comments in the code.
How do I do this please?

I'm using the Vibrantink Code Editor Theme - so I changed the 'comment' entry in the vssettings file to the 'ox....' color value
in the Picker, but it doesn't change anything.