My personal favorites for new colors:
Win = Neon Orange/Red
Ice = Neon Bright Blue
Curse = Dark Green
Steel = Darker than QS, lighter than Demon
Ghost = Very Light green/yellow
Pearlescent = Dark Purpleish
for reference:
Shaman = Dark Red
Chronos = Light-ish Orange/Pink
QS = Light-ish Grey
Elf = Neon-ish Purple
Radioactive = Neon Blue/Green