dude, I've asked myself this like a bazillion times.
i understood them up until about a month ago and then they just got weird/random.
btw aholes, when i say that i want orange and purple... i mean that i want them alternating colors for every letter and not rick in orange and daris in purple. thanks for nothing ffaces/turdballs. 
also, please don't alternate orange, purple, orange, purple.
please do purple, orange, purple, orange.
going absolutely out of my way to not be a dick here ok. just f'ing do it. sheesh
edit to add that you have until midnight on sunday.