and hot cash, during which they only recently pulled their vinyl stock so people don't grab a shit ton of vinyl for basically half price.
also, bands are probably more likely to press multiple variants because
people are more likely to buy multiple copies of the same album on different colors on top of those who already just want to buy one copy on black -- thus, higher sales. the unlimited runs of black vinyl don't entice the collectors quite the same way. the band has no control over resale, but i'm sure it certainly sells more with several variants.