How would you explain magic with eclectic connections between effects, colors and inter-magic interactions?
Basically, "Why do these colors of magic do the things they do?"
Such as this following system, where gems are just a placeholder for a source of color. It could be paint or whatever:
All spells are cast with colored gems which can be used alone, or in combination, mixing colors, or staying with a single color.
When used by themselves, these colors have these effects:
Red: Fire, Explosions
Green: Wind, Air, Lightning
Dark Yellow/Orange: Earth, Metal, Endurance-boosts
Light Yellow: Paralysis
Blue: Water, Ice, Healing
Black: Life Drain
These are the effects on spells when colors are combined:
Red: Stronger Spells, or Strength Enhancement
Green: Spell is duplicated, adding more projectiles, or, if the spell is used on a person, it's Speed Enhancement.
Blue: Inflicts Poison or Paralysis
Dark Yellow/Orange: Longer-lasting and/or homing
This was intended to make a magic system for fanfiction of Chantelise, but that's just history.