Live preview would be perfect. Right now the way I do it is I have two tabs open, one of the editor and one of my profile, otherwise it would take way too much time with how much I tweak it.
Maybe somebody should suggest it in the feedback forum :o
XDD The width is perfect now imo. c: I wish that PC had a WYSIWYG editor, like you can click parts and choose the color and do a live preview, etc. Probably too much work though lol >>
Alright I think I've fixed it for the most part on all themes except Top Dog. I made the width a bit bigger but the colors are still messed a bit on that one, yet I filled in all the fields. Oh well! XD
If it's theme-specific, then you probably either left the Controls background color default or the font color default. The default background is light, so maybe change it to the border color you have, or black? Idk just my guess xD