Honestly I like the "latte" accent color better than GMK Cafe.
Personally I prefer arrow cluster matching the modifier color ("Milk" color) in the base kit, or the "Latte" accent. Perhaps consider moving the accent "Latte" color spacebar to the accent kit, and just use "Milk" color for the base arrow. It will be sad to see the base kit cost higher than average and make the overall cost of base + novelties less attractive.