Mi Quince

Hola!! I need some advice! Ok I have a theme for my Quince and its gonna be like under the sea cuz i went to one like dat and it was soo beautiful!! Now my dress is gonna b a very light blu and so some gurls want a dark blu but the others wanted a baby blu...... And i dunno which one to choose???? and sum of the gurls want the guys to have a white tux but i thought Blk would b better! im soo confused! por favor ayuda me? gracias