In this fantasy world, everyone got magic, magic is like a muscle, someone who uses it a lot gets more magic. Someone who doesn't use it loses it.
Some are born with a lot of magic and some have illnesses that make them magically impaired.
Magic is divided in to 3 categories, named by their aura colors, red, blue and green.
Red magic can only be used for destructive purposes (remember destruction can sometimes be good), such as doing damage to others and properties, this also includes starting a bonfire and other similar purposes.
Blue magic is kind of multipurpose magic, open locks, translate documents, hygiene, shielding, protection and so on.
Green magic is creation magic. Summon animals, create food, heal wounds.
Red magic restores it self in a matter of minutes, Blue magic restores it self in a matter of hours, green magic recovered in a matter of days.
Would "normal" people with access to this power be able to control this immense destructive force - Without any moral guidance and religion/tutoring?
Or would the aggressive human nature make the power so tempting that people would attack each other?
PS. The magics are in direct relation to each other, a person training healing would automatically get more blue and red magic.