im so colorblind that i dont see purple droplets, if i didnt read the comments i would miss the upgrade too xD, hate them with passion, the % chance seems bs too, 0.005% that means one droplet in 20000 will be purple, but they apper like 1/20. Yeah after some testing, there is litteraly no diffrence in how many purple droplets spawn with lvl 1 upgrade or lvl 8, only lvl 9 works