Psychtoolbox>Datapixx.{mex*} subfunction

Datapixx(‘SetVideoClutTransparencyColor’, color);

M16 video mode supports an overlay whose colors are loaded via SetVideoClut.
SetVideoClutTransparencyColor specifies a CLUT color which allows the greyscale
image to show through.
Pass a 3-element array with the RGB intensities in the range 0-1.
See DatapixxM16Demo for an example.

###See also: SetVideoMode, SetVideoClut, EnableVideoClutTransparencyColorMode