When Billy Batson makes all his foster friends(brothers and sisters) Shazam (gives them the power of Shazam), each of them gets different color suits:
L-R: Pedro Peña (green), Darla Dudley (violet), Eugene Choi (grey), Billy Batson (red), Mary Bromfield (red), Freddy Freeman (blue).
What is the significance of these different color suits? Does each color represent a different quality or superpower?