The latest:
$.25 (non-denom) - Gray - Black/Red
$1 - Dark Blue - Light Blue/White
$5 - Red - Orange/White
$25 - Dark Green - Pink/Light Green
$100 - Black - Purple/Light Turquoise
$500 - Purple - Lavender/Gray
$1000 (non-denom) - Yellow - Purple/Orange
Keep those comments coming!