The text for the signs in the Secret Worlds map levels still reference Rainbow Coins and Rainbow Gates despite them being replaced with Keys and Gold Stars respectively in the map setting. Additionally, the coin counter in the HUD still says "Coins" despite Keys being the main objective.
EDIT: Another thing I noticed is that whenever a key is collected, rainbow star particles are emitted when gold star particles would ideally be emitted.
The text for the signs in the Secret Worlds map levels still reference Rainbow Coins and Rainbow Gates despite them being replaced with Keys and Gold Stars respectively in the map setting. Additionally, the coin counter in the HUD still says "Coins" despite Keys being the main objective.
EDIT: Another thing I noticed is that whenever a key is collected, rainbow star particles are emitted when gold star particles would ideally be emitted.