My Nephew Jack has the most beautiful blue eyes I have ever seen. They are so bright blue it looks like you are looking into the sky on a cloudless sunny day. They are big and round and I imagine that when he looks at you it is like he is looking into your soul. How amazing to have eyes like that.
My father has blue eyes as well and his will change color depending on the mood he is in. Sometimes they are a steely blue that pierces deep into your mind and makes you feel all icky and sticky.
And sometimes they are warm and welcoming and for just one second you feel loved and accepted. Right off hand I can’t remember any other shades they change into but those two should keep you going for a while.