Orchid leaf changing colors what do I do?

[cayansia]

I'm a beginner orchid owner I get the beautiful flower a couple of months ago. My blooms have fallen off already, however the color of my plants leafs are changing. Google wasn't helpful so I wanted to ask if this was normal or a sign that my plant might have something wrong with it. I can't figure out how to add a photo but my leaves have always been dark green and now they are turning a bright light green underneath.