Okay, here's where we're at for now. I tried to take all suggestions into account in one form or another while making these changes. I'm still pretty up in the air on the edge spot colors for the $500. This is still just a rough idea - I will know more about our ability to vary the edge spot styles tomorrow.
$0.25 (may be non-denom) - Gray w/ Double-Wide Red/Black
$1 - Dark Blue w/ Double-Wide Light-Blue/White
$5 - Red w/ Dual White/Orange
$25 - Green w/ Dual Light-Green/Pink
$100 - Black w/ Dual Lavender/Gray
$500 - Purple w/ Dual White/Light-Teal
$1000 (may be non-denom) - Yellow w/ 2x Double-Wide Black