TBF I was surprised that bss color is even a user option. From what I read most of it will be a self configuring protocol (OFDMA just like cell phones) and not as reliant on users entering colors or frequencies. This will be enforced if cell phones share the same "color space" and will not be tinkerer friendly.
It's similar to 802.11ac where a user picks a channel and bandwidth but behind the scenes the system is actually juggling the resource units. Too bad the IEEE stuff is pay walled or user sign up.