What do large flowers with brightly colored petals attract?

Brightly coloured flowers are normally pollinated by any number of animals and insects. The coloring acts as an attractant to the flower which normally then offers nectar as an additional attractant.

Dull coloured flowers (or white ones) are normally attracted to nocturnal animals (bats, mice etc) as well as nocturnal insects such as moths. They also normally have a strong scent as an added attractant.