Colours of Magic: Indigo (d20)
Indigo is the colour of the mind. It is a deeper shade of Blue; where blue looks externally in the universe for ways to make order and gain control¸ Indigo looks within¸ seeking first and foremost order and control of the mind.
"Those with mastery over Indigo magic can control others with a thought¸ bring oblivion upon their enemies and read into the deepest memories of their friends and enemies alike.
"The most powerful and feared of mind mages is the Skeptomancer¸ a mage with such mental power that they cease to require the normal accoutrements of magic¸ becoming able to manipulate the thoughts and minds of others by the sheer force of their will alone.