Appearance
A Spark Pixum can be recognized by the Blues and purples in their wings or hair. They have hard time keeping their hair down.
Dash and Crash
The Spark Pixum are known for being extremely energetic for long periods of time, after which their crash fast and hard.
Crackling Dust
You can cast the Faerie Fire spell once with this trait, requiring no material components, and you regain the ability to cast it this way when you finish a long rest. Furthermore if a creature fails their save against this spell then they cannot take their reaction until the end of their next turn. Charisma is your spellcasting ability for this spell.