Ruger kept supplying felt bags about the same time the OM conversion kit came out...about 1983. During the last hoorah for those, Ruger sent out any and all colors of felt bags they had at the time...orange, brown, green, blue and of course red.
The first "different" color we received was orange...on a gun we'd sent back to the factory to have the conversion done, a Single-Six...the mag. cylinder was in it when it returned. That gun is still the only conversion gun I've heard of that had an eagle stamp instead of an "R" on the bottom inside of the frame signifying the conversion had been done.
Chet15