have decided to go with an easier approach.
as the battery % meter is right now it is a little dull and can be "hard" to read.

So this is what i want to do:
Change the background color to match the different levels of charge so it goes from green to red.

but how do i do it, i have tried to include snippetExtBgRGB in my script but it does nothing or gives an error....

does nothing:
'snippetExtBgRGB #<ffff><0000><0000>
gives error
snippetExtBgRGB=#<ffff><0000><0000>