Although i don't know how the highlighting engine works, i think this could be possible.
I already 'simulated' this behaviour (The screenshot is directly from Rapid PHP):
I configured the 'Html with ASP' colors like in the screenshot... (i don't use ASP anyway). Then i added the extension 'htm' to the ASP 'document types'... and once i click 'apply', the highlighting colors change.
This works, but i would have to add / remove the extension everytime.
So, the highlighting engine is at least capable of changing colors on the fly. Although, maybe the highlighting-engine directly responds to file extension
Don't get me wrong, i don't want to complain, and insist... i am doing small pieces of software from time to time, mainly for friends... so i know what it means when the user is 'begging' for things that simply are'nt possible...
Only the developer knows what can be done...
and i respect that of course
