Originally Posted by msticninja
I assumed it did convert to greyscale first before tinting, but you may be right. I'll have to think how to test that.
Quick test: If you set CF3D to blue, anything that's pure yellow goes black. For example, if you go to SuperDim, the left half of the brightness adjustment bar is yellow and disappears completely.
Another test: go with the browser to http://www.w3schools.com/html/html_colors.asp
in red mode. Notice that the blue 0000FF and green 00FF00 samples can't be distinguished from 000000 black, while the red FF0000 can't be distinguished from white FFFFFF.