This Shrunk’n Monk Halloween 2024 unspecified limited edition came in one of three various drip glazes consisting of red, orange, purple, yellow, blue and black.
Brad calls these "artist proofs" on his site, but they were created after complete runs of this design were already sold and elsewhere he refers to them as "custom pieces" which is more appropriate.
In any case, they are extremely limited color-ways of this design.