->''Blue eyes to Heaven rise''\\
''Grey eyes go to Paradise''\\
''Green eyes in Hell tell lies''\\
''Black eyes in Purgatory get wise''\\
-- French nursery rhyme
This is for stereotypes associated with common human colors. Magical characters often have the eye colour associated with their ElementalPowers.
For more unusual colors see: TechnicolorEyes and PurpleEyes. For eye colors that mean trouble: UhOhEyes.