I'm not sure you will find a rossi in the configuration you're after - the color cased ones are harder to come by. The newer Winchesters in .44 are usually blued, not color case.
Chiappa makes one like what you are looking for, but to be honest, I can't recommend Chiappa - their QA/QC is non-existent, I returned my last two .45 Colts for having serious manufacturing defects right out of the box - both were octagon barrels on colour case receivers though

If these were Rossi priced, I might have fixed and kept them, but they were priced like real Winchesters - which is ridiculous f you ask me. They are NOT as well made as their price suggests.
If you can live with a blued receiver, a Rossi .44 with a straight grip stock is easy to find and with a minimum of work (de-burring internals, replacing the factory follower with a metal one, and possibly putting in a lighter ejection spring) they run better than anything else out there. The fit and finish is not very good on these, but they work well and take abuse like no other 92 clone in my experience.
My .44 92 is a stainless 16" trapper. It had a few warts out of the box, but they were easy to fix and for $650 new, it was hard to not like the end product
If you DO manage to find a color-cased .44 Mag Rossi , you will be looking for model R92-50003 (24" barrel rifle
click here) or model R92-50203 (20" barrel short rifle
click here). I haven't seen dealers carry either in Canada - but I haven't checked every dealer either - lol.