Well this was fun. I learned a lot here. The subject was a lime wedge against different colored backgrounds. In the end I used pretty much the same colors for the wedge itself but the background (obviously) and the foreground and reflection changed color. In particular that reflection, even though it looks yellow/orange is in real life a pure grey. Who’d have thought? In hindsight I should have known as a yellow reflection on a gray background will result in a neutral gray!
Here’s a closeup of the result