I thought I'd share here what I sent to Keith in response to the question in case anyone else was interested.
The first address is a chart generated some time ago which is supposed to help give you a clue to what you might expect from crosses. Karl King's site at the second address contains quite a few articles which deal with the subject. I've discovered there are many roses whose breeding is pretty much guaranteed to produce predictable colors. My rose, Lynnie, produces huge percentages of pink, very close to the original color, regardless of what is crossed with it. The pigment genes are so strong, they over ride most of what they are bred with.
http://www.love-of-roses.com/p......
http://bulbnrose.x10.mx/Roses/...
Edward LeGrice wrote an interesting article about Unusual Colors in Roses which helps explain how the browns, grays and purples come about, you might find interesting.
http://www.paulbardenroses.com...
So. sometimes, yes, it is possible to predict the colors you should obtain from some crosses. But, don't bet the farm on it! As soon as you do, they're sure to change the rules on you! I hope it helps.
