I too love Orange Russian 117 and who do we have to thank for that one?
http://tatianastomatobase.com/wiki/Orange_Russian_117
Russian 117 is a double heart and Georgia Streak is a well known typical gold/red bicolor.
Please consider growing the one parent Russian 117 sometime, IMO it's outstanding,
page 212 in my heirloom tomato book for those who might have a copy of that.
Carolyn