Suggestion:
- Change Yellow to Orange, and shift the shade of light blue.
- Support user color chooser or customization.
I live with a black and white printer, and am often vexed with printing "color" documents in shades of grey, with anti-alising done in color shades as opposed to the character base color. Few programmers seem to think about how their images will look in B+W. But some of us poor people can't afford the ink and time for color printing, and send our photographs to the drug store printer when we have real pictures to share. /rant