Has anyone ever seen a rose bush with multi colored flowers on it?

I have a rose bush that has one red rose with very little orange in the center, several that are yellow with orange tips and one that is pink with a very light pink center. This is all one on bush!! I've never seen anything like it and was wondering if this is normal. I'm not a flower person and don't know jack about them. I took pictures because I thought "If this isn't normal, no one will ever believe me." And to think I thought about taking it out because I'm allergic to the bees it attracts.
Has anyone ever seen a rose bush with multi colored flowers on it?
This is a grafted rose of many colors. When prunning, do not cut too close to the roots, as you will cut off the stems that the roses of different colors come from. Never prune closer than about 8" from the root stock.
Reply:No i havent.
Reply:I have seen something like this in Stark Brothers. They do mail order plants. I think you have to graft the plant to do this. I know they sell an apple tree that has several types of apples on it.

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