All the 2tone key have same. It's because of the keys grouping in the molds. We would have to buy 300x caps lock, homing keys, numpad 0 in beige at least and there might even be some others in there. I suppose alternate homing keys are possibly interesting, not sure what else to really do with beige numpad 0 key besides it being useful for keyboard with 2unit shift.
Right, the only other choice is BSP... and they don't even have fulltouch caps locks, 1.25 keys, or SPACEBARS! Plus they cost a lot more too. Easiest solution if they are going to be problem about 2tone is not to do 2tone and stick to single key color.