I don't know as I believe that Crappie only see shades of grey, as it's already been proven that Bass can distinguish many shades of different colors (and Bass & Crappie are "relatives").
And I still don't know why Crappie around here like Pink so much, since it remains basically "pink" thru the depths I'd normally be fishing (according to the video) But, it does tell me something about red (turning darker) and green (basically staying green, but lighter) and purple (turning a dark blue) in the depths I normally fish. I just wonder how much change occurs in waters that are far less clear than the water in the video. Wouldn't they tend to get "darker" quicker ??