[Nano-devel] Nanorc - Partial match syntax higlighting?

[Robert Schultz]

I'm doing some more complicated syntax highlighting for a custom file 
format of mine.
One single line, if the entire line matches a regexp has to have several 
different colors for different parts.

Is there any way to have a regexp include grouped expressions (match) 
and then apply a different color per match?

Example:

bluehere -- redhere -- yellowhere

([a-zA-Z]+) -- ([a-zA-Z]+) -- ([a-zA-Z]+)

That would yield three matches \1, \2, \3  ($1, $2, $3)
I'd like to set the first to blue, the second to red, the third to yellow.

But right now in nanorc, what the whole line matches too, is set to that 
color.

Is there any way to simply say 'only this part of the regexp' should be 
colored?