all you have to do is get her mouth open with a qtip like stated earlier, you are not going to look for color change, look for excess mucus or bubbline, which would be a sign of RI, if that is what it happens to be (I hope it isnt), take your BP to the vet immediately for some antibiotics.

1 more question to help us all out, how is your husbandry? what are you temps and humidity levels in the enclosure?