Quick update - Protos have been paid for. I'm hoping to receive them by the end of April if there are no delays. I've decided to order an E-white one and Red one.
Currently the E-White, Black, and Gray are the most popular colors so I'll offer E-white and dark gray in order to split the difference between Black and Gray. I'll order color chips for the Gray, a blue gray, and light purple. Based on how those turn out, I'll announce the third color to go with E-white and Gray.
If everything goes smoothly, we can probably start the GB sometime in May.