Hopefully they do a baseball glove interior option, as an alternate to blue alcantara, or all black. Oxblood Red would be good, too.
Exterior, not a comprehensive list, but what I would like to see:
Copper Orange
Forest/Emerald green.
Rich red (similar to Mazda Soul Red)
Aqua Blue
Silver - of course it is going to offer silver... and Black.
Magnetic Gray (like hematite)
Something like TechnoViolet
Speed Yellow (warmer than the Proto color)
A more subtle mustard gold color could be interesting.
Cold Pearl white not tinted slightly yellow, but not just single-stage glossy-appliance-white, either. Best exterior choice for the blue interior, or red.
a good selection of silver, gray/machined contrast, and bronze wheel options.