As I said, there could be a new switch, although I don't see how this would require backwards compatibility. I mean, just like /echo, /aline etc. indenting switches didn't work well with colours in the past and now they're simply changed, I think the discussed commands could be changed the same way, since I can't see why could one rely on their current behaviour.
In my humble opinion, it could be much more logical if a switch was used to make them treat line colours like they do now, having the suggested behaviour by default.
But again, it'd be fine in any way, as long as the support existed..
