Usually a range between pink-red to yellow-orange with white areas. If you can get some photos I can take a look if you'd like. Usually the concerns arise when there are sores/wounds or if there is swelling along the gums/jaw which could indicate infection.
There is something wrong with my beardies left eye!! I included a picture where it shows what her right eye looks like then the others are what her left eye is. She always has it closed (as much as she can) and she finally opened it for a bit when i misted her. I don’t know what i could be doing wrong and it’s not from sand because she doesn’t have it in her cage.