Simplify the following text for a Grade 12 native English-speaking person.
Original: Red â -- â -- and `` Raw '' indicates a Raw superstar , blue â -- â -- and `` SD '' indicates a SmackDown superstar , purple â -- â -- and `` ECW '' indicates an ECW superstar , and white and `` WWE '' indicates a member of the WWE alumni .
Simplified: Red â -- â -- `` Raw '' indicates a Raw superstar , blue â -- â -- `` SD '' indicates a SmackDown superstar , purple â -- â -- `` ECW '' indicates an ECW superstar , and gold â -- â -- indicates a special guest entrant .