Comment on Do I Need a Jacket? by FlyingHyrax

You can click a "gear" button on a widget. This action will open settings.txt with current settings for this widget. There you can find a line called "color" with 4 numbers. The first three are (at least i assume so) traditional RGB numbers ( range: 0-255 ) and the last one (also an assumption) is the brightness or smth like that (range: 0-255)