> This limitation is worked-around by reducing the resolution to 6 bits per 
> channel. The highest number (the one representing white) is -262144. It does 
> not exceed 6 digits and can be stored at full precision.
It's probably worth explaining why you say "the one representing white" and 
not simply "white".  (I.e., what every other sane color format calls "white" does 
not equal what iemgui's file color format calls -262144.)