Oddly purple/red new phal leaf

[Erica0227]

Hello so I got a lil phal hybrid from my local farmer's market a couple months ago and it recently put out a new leaf. Problem is, it is weirdly red. The underside of the very small new leaf (1 inch maybe) is nearly all purple and it has purple spots on the top too. I would normally think it's sun damage (my friend got the same orchid as me but she accidentally left it on a southern windowsill so her new leaf was stunted), however my orchid is on a northern windowsill. The mini phals near it are all doing alright and producing normal leaves. Could it be genetics causing this? It had yellow fragrant flowers.