I've enabled the modified line highlight and left the default colo(u)r as red. Type a bit and there's a red splodge in the margin. Magic.
I type some more and notice that there are dark red splodges in the margin. Oh, I bet it gets darker and the modification gets older! Er.. no. I've spent some while trying to figure it out, but can't.
Anyway, while experimenting I changed the modified line colour to yellow, and found that this also changes the modified tab text colour! Hmmm... don't think I like this. Logically, I'd expect the margin splodge to be the background colour and the tab text to be the text colour - is it a bug that the background is used for both?
So, back to the splodge... blow me if the yellow splodges turn into dark red splodges again. This has to be something somewhere ignoring the modified line colour setting, aka a real live bug, right?
Which brings me to... what's the preferred method for reporting (alleged or suspected) bugs? A post on here or a quiet email to support?