Yes with what everyone above said. I work the RSR fast passes before and they're gone within an hour of the park opening. The fast passes done start until the park opens even with Magic Mornings. I always tell people single rider is the way to go.
I work world of color all the time. World of color fast passes don't count as a ride fast pass. Think of it more as a ticket. So you can hold a world of color ticket and a ride fast pass. The 9 o'clock show has been booked every night lately. But the 1015 show isn't and you should be able to get tickets up until the fast pass distribution center for world of color shuts down at 9:20pm.