What happens with multiple active pigment bleed genes?

[pushfoo]

From discord conversation mentioned by @ligfx .

If more than one bleed gene may be active at once, how do they interact? Foes one override, or do they mix somehow?

[Vermidia]

Each active pigment bleed gene averages with the next, to get their final value.
Example:

Gene 1: 255
Gene 2: 128
Gene 3: 0

(255 & 128) = 191 (191.5)
(128 & 191) = 159 (159.5)
(0 & 159) = 79 (79.5)

Result: 79