I'm not aware of a non-GFP HR reporter (I assume you are referring to pDRGFP?), but there is a world of fluorescent proteins out there https://www.addgene.org/fluorescent-proteins/
and dsRed derivatives are genetically distinct from GFP, so any of the more red-shifted variants such as mKate should do (dsRed itself undergoes a green fluorescent phase during folding, so not great).
So you could easily clone your own different colour HR reporter (and perhaps deposit at Addgene for other researchers?)
Thanks Michael, Petra. I know there are lots of fluorescent proteins but as Petra assumed correctly, I was hoping there might already be a DRRFP or similar - we really don't want to make one ourselves if we can avoid it!