[shameless_plug]
I have something I'm going to be releasing within the next few days that might suit you. It's based on my FB Lite, but the bar/popup is now completely dynamic for sizing. You can select your font and font size, and the bar/popup adjust themselves accordingly. There's also a floating command and amp which, in addition to sizing themselves according to the font used, can have their widths stretched on the fly by dragging the right edge... It's pretty cool, if I do say so myself. :D
[/shameless_plug]