Clownfish changing colors

[ShadowWolfBloodMoonBorn]

My clown fish was a regular orange and white after awhile it got a horizontal black stripe now it’s back to orange. I know they can turn black but is it normal for it to change back? What would cause this?

 

[ShadowWolfBloodMoonBorn]

I forgot to say I don’t have a pic of it changed back yet but I will post that ASAP. Sorry guy or the quality of the photo.