- public Color ncolors
number of colors
- public Color nfree
number of unallocated colors
- public Color black
the black color
- public Color white
the white color
- public uint rgb_mode
set when RGB mode
- public uint[] prec
color field precisions
- public uint[] pos
color field positions
- public uint[] mask
masks for significant bits
- public uint[] round
add these for rounding
- public uint[] shift
shifts for (un)packing color
- public uint norm
normalization for (un)packing
- public ColorInfoTable[] ctable
color table for non-RGB modes
