Non-Capturing Group(?:color:\s*|pid=\d*) color:the literal text color: (case sensitive) \s*any whitespace character, repeated any number of times
pid=the literal text pid= (case sensitive) \d*a digit, repeated any number of times
#the literal # (3510 / 438 / 2316)
(*SKIP)acts like (*PRUNE), but the next unanchored match attempt starts where (*SKIP) was reached instead of at the next subject character
(*F)forces the current match attempt to fail at this position