Looking for a word. Color in LED units

[JChenault]

There is a word that describes the "false color" of RGB LED units on different color surfaces. I think it is something like Memerism. But when I look it up I get articles about spiritualism. I know what it is, I just don't remember the name.

Anybody know?

 

[derekleffew]

metamer, metamerism.
One of them should be in our wiki.