This sounds more like a feature suggestion than a bug report to me. The behavior is exactly as I expected -- it copies the control codes as they appear in the text, which is what /help control+copy leads me to believe is the desired effect. That's fine by me.
If your suggestion were to be implemented, it seems that the next logical step would be to also throw in the default background color, if not specified in the control codes, because if you msg the text without that color code to someone with a different bg, it would look different.
If these suggestions are added, I would hope that it would be optional, or would be done with some key other than ctrl... perhaps ctrl+shift.