LoL most likely it is not true, since genes usually assort independently, regardless of parent. What is interesting is how sometimes genes or sets of traits are linked up and are more often inherited as a complete "packages" I think that when you get to sample sizes as large are yours, you begin to see the true pattern of inheritance. Your experience with CCacao is really interesting, getting all sorts of color combination, when blues and browns, "give only blues and browns" I think that with your record keeping, after a few years of data, we can start to piece together more of this mystery. When looking at primary hybrids there are sometimes two distinct groups of offspring, but with hybrid hibiscus have such a muddy ancestrial past, it is unlikely that this is true.
Cherry Glow is just so striking, I couldnt say no to it. I had to go back and see what the heck ive been ordering this year, looks like I was in a red and white mood this year, with Cherry Glow, Painted Pony, Corazon, and Princess K, with all looking beautiful and unique to me. I cant wait to take a pic with all of them blooming together, hopefully Papa Cherry Appaloosa (which has grown maybe three inches in 4 months) with the kids,
I am looking forward to seeing more pics of your CG this summer