I had a jewel once, and sometimes he/she would become a strong shade of red in certain areas. I may be wrong, but I always just assumed it was certain degrees of stress. It's hard to make out where your complaint is cuz he looks pretty normal to me. I'm by no means an expert, just my experience.
Actually some Jewells get brighter with red coloration than others. Your fish looks ok to me, but watch it for the next couple days and see how it goes.
Is the fish still eating regularly, and acting normally?
yeah i just wasent sure because it comes and goes, he seems to be eating normally, and acting normally, theres 2 of them that keep changing colors like that, and the other two seem to be normal with no signs of red..but thanks for all your help