From what I can tell... Red, Green, Black, White Artificer.
Seeing as I'll play anything from those colours, and my favourite cards to use are generally the colourless ones; Artifacts and the like. Artificer fits too, seeing as I main Golems.
Sometimes a Green Hipster Druid, sometimes a insane Grixis Scientist. You know, sometimes you just wake up and say "Hey, I wanna cast Nicol Bolas Planeswalker and kill stuff"...or that's just me?
I would say Im a Green mage given that I use creatures to kill my opponent, however I care nothing about nature it's just a tool for me to use to lead myself to victory. That sounds Green/Black to me.