Different colors used in a Mandala design represents different desired outcomes.
White - turns ignorance and acceptance into wisdom
Yellow - removes pride and creates a sense of belonging (oneness)
Red - removes fear and limiting thoughts that stick in the mind
Green - heals one of jealously and turns it into vibrational energies of unconditional love and understanding
Blue - anger into self-reflection and mindfulness
This Mandala pendant isn't colored is because its state of being "colorless" allows you to paint it using your own energies and vibrations. Color in the spiritual realm supersedes physical color.
A colorless silver Mandala absorbs negative thoughts & emotions, replacing them with constructive energies that will bring you closer to your divine manifestation.