Several years ago I did the same thing.
I had an observation hive and was feeding them syrup dyed with red food coloring.
It was interesting to see where the bees
stored it. After a couple of jars I switched
to blue and ended up with green honey. The flow started and when it got mixed with the blue, well every one knows, blue and yellow make green. I called it My Christmas Honey
Fremont, NH USA