Question

it's perfectly round , sometimes has rainbows , it could be permanent , but can also disappear please guess what it is

Answer 1

I think it is bubbles.

Step-by-step explanation:

Bubbles are perfectly round usually. Bubbles can sometimes have rainbows by/with reflections. Bubbles could be permanent depending on what type/size and other things but bubbles can also dissapear as they usually do. Hope this helps!

Answer 2

bubble?

Step-by-step explanation:

i don't know about permanent but sure, it's all of those.