i'm noticing that you get random/weird results depending on whether you click on the text of what you want to adjust(bottom, box, button, etc) or the webcodecolornumber things below the text of what you want to adjust(#999999,#cfcfcf, whatever your colors are).
it seems a reliable "workaround" at this point is to make sure you're clicking on the text and not the numbers when adjusting colors. otherwise, things get all random and weird.
edit: ah, okay. it's the difference between clicking on the box and the text field within the box. so just make sure you're staying away from clicking the text field and things will stay reliable.