As colorist extraordinaire Giuliano Peratelli turns in his color pages, he and I often talk about the best way to handle the final execution. Since we're both very visual, I just port everything over to the iPad and make notes that way, then send it right over to him.
Here's a most recent "check in" from Giuliano so we can land the effect for "Killer Performance" when she summons the cosmic being known as "The Galaxian".
