These are a Yoder brothers introduction and offered as cuttings to the trade rooted or not, your choice. The only thing I can add is when my CB first comes out in the early morning it is deeper orange and then gets lighter (brighter)as the bloom goes through the day. I am used to several varieties having this habit so don't consider it unusual. I am not sure if this is whats happening with you or not just a guess from my observations of many different hibiscus varieties going through their daily bloom cycles.
Happy Growing David

Tropical hibiscus are normally propagated by cuttings - they have to be, since they do not come true from seed. New hybrids, of course, come from seeds.

Flowers can vary considerably in size when weather conditions change, especially temperature. Sometimes winter and summer flowers look very different.