The Legend of Spyro: The Eternal Night - Cynder was originally set to breathe green fire

 According to Jared Pullen, the lead artist of The Legend of Spyro: A New Beginning and The Eternal Night, Cynder was originally going to breathe green fire. Evident of this is that there are texture files in the game that has has Cynder's name along with green fire. But they scrapped it when the color was too much like Terrador and the Earth elemental color.

https://dragonoficeandfire.deviantart.com/journal/Q-A-with-Jared-Pullen-lead-concept-artist-of-TLoS-591799120

 

Texture files for Cynder's breath weapon