BUT, the OP is about my favorite Worm color...
If I had to choose one, it'll be a rich Green Pumpkin.
I have X2 Green Pumpkin Brown and would use that in a heavy dose.
I would not use any flake. If I added anything other than colorant, I'd add a hit of Black Pearl powder.
With or without the pearl, this color will hit in all water clarities.
They #1 key to catching fish is finding them.
The 80/20 Rule: 80% of the fish are in 20% of the water.
Even fishing at night, standard natural colors apply because the colors of prey don't change when the sun goes down.
Favorite Worm Color:
Green Pumpkin Brown, or just Green Pumpkin.