My screen name is one I've had as an e-mail address for years. I first heard about it when watching Red Dwarf when Kryten gets into trouble and his HUD is showing the colours for the state of the emergency he's in. It goes from red through tangerine, heliotrope and a couple of others.
I'd never heard the word until then and I liked the sound of it. I only found out later that it's a flower and a colour as well as a description for sun following plants and some kind of semi-precious stone too I think.
I love the actual colour too : blueish purple.
My avatar is a pic I took of myself in the glow of the TV screen I was standing in front of after getting in quite exceptionally drunk from a very entertaining night out. OK OK I was hammered, I'm not narcissistic.
I was amazed that it turned out at all considering the state I was in.
The full pic, allbeit a smaller version is
here.