just alittle refrence on Pheonix Koopa's flame colour. Even though she created the piranha plants, wich most would think makes her a nature or earth elementaled koopaling, she can actually breath fire.

This is the fires colour at regular temp. It gets much brighter when she is furious, and waaaay more dull/darker when she's sad or unwell. While her flames burst out of her mouth (think mega charizard X) when angered, the flames trickle and spurt from her jaws when feeling negative.

Her entire insides are in the same colour spectrum (see ref for actual colours) and this is because her insides are coated and fireproof.