Thanks. There's actually a funny story behind how I first got the idea for them. A long time ago there was a FReeper (in retrospect I wish I could remember who it was), who would use white text immediately after his comments when he was arguing with someone. His black text comments would be civil, but then immediately following them would be something to the effect of "you scumbag" in white text.
I noticed this one day when I copied and pasted one of his comments to refute, and didn't notice the bad part until it showed up on my comment for all to see.