Have you even considered that it might be the background that changes the colour? huh? On green it's magenta (that IS a colour... my mum is an art teacher!)And on turquoise, it's RED....So there!

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Replying to:

It was bound to happen! Everyone in Q+A have been arguing, calling it Pink, Red and Magenta, it is purple! Magenta is not even a colour! It's something you stick on a fridge! My scroller is purple, now feel free to argue, but it's my site, therefore I'm right! That rhymes Marge and you know it!