The picture isn't the best but the last half looks like a darker color.
Based on size your beardie must also be quite young? If you haven't been to a reptile veterinarian you should go to one. Getting a baseline check of a fecal sample and a physical exam is best. Beardies will hide being sick or not feeling well so it's up to you as a keeper to be proactive on health. The vet can also go over husbandry. We can help you with that too if you can share what size enclosure you have, what are your heat lights, your
UVB light size/brand/all details, how you measure temperatures, do you keep lights on a timer, etc.
Use this website to find a qualified vet in your area:
https://arav.site-ym.com/search/custom.asp?id=3661