The colors are in hexidecimal code (base 16, 00-ff)
They are in the format:
alpha, blue, green, red ( a reversal of normal red,green, blue)
where alpha is the tranparency setting 00 for clear, ff for solid
For example:
ff0000ff is solid red
330000ff is a transpanent (see thru) red
ff00ff00 is solid green
ffff0000 is solid blue
ff00ffff is solid yellow (mixing of red and green)
ffff00ff is solid purple (mixing of red & blue)
77008cff is semi-transparent orange
see rgb color link:
http://www.pitt.edu/~nisg/cis/web/cgi/rgb.htmlHope this helps