Ok my husband has the red. black and yellow striped monorails. I know that I saw purple last August do they still sell this color????...it was a super budget trip last year and he didn't want to waste money on toys. As far as other pieces he has the castle, the haunted mansion, the contemporary, the Polynesian, SSE and the switching station. His parents and my mom both live within 45 minutes of WDW and they build up his collection for birthdays and Christmas. We're moving down to FL next weekend....so it'll be easier for him to keep up with colors...but I'll never hear the end of it if he missed out on a color.