Colours could be improved on 6 bit panels

[GoogleCodeExporter]

Many laptop displays have 6 bits per colour component per pixel, and the
graphics controllers use dithering to cover the last two bits in a 8 bit
colour. The dark scheme uses colours which require dithering.Could you
round each colour so the least significant nibble is 3, 7, B or F?

Original issue reported on code.google.com by [email protected] on 28 May 2009 at 6:20