Welcome Usmile ! You have done the right thing in coming here.
I would
bath your baby 3-4 times a week. Water temps @ 90-100*F for 10-15 minutes, totally supervised. Water should go up past his elbows.
Your bearded is still getting used to you and his new enclosure. Just give him some time, limit the handling except for the baths, he will come around soon.
You can use pedialyte, however with the baths you really don't need that.
Feeding:
Lights on, place salad with calcuim (with D3 if you are not using a Mercury Vapor bulb, with if a Reptisun 10.0 Tube) 5 days a week, a multivitamin 2 days a week, sprinkled over.
1-2 hours later, offer the first prey feeding of the day, sprinkle on the calcium/vitamins (don't use these together though).
2 hours later, second prey feeding without any sprinkles.
2 hours later, last prey feeding, same as above.
2 hours later, lights out.
I usually
bath my babies about an hour before bedtime, and bundle them up in a towel to lay on my chest, to acclimate them to me, before laying them back into their vivs for bedtime.
Babies and juveniles need anywhere from 50-100 prey feeders daily. Now that being said, if yours is still getting used to you, it may not eat as many until it does . I feed in a separate container in the viv, enough for about 15 minutes of eating. You may wish to drop in a few at a time, until the baby is full, and he will let you know, by trying to get out, or getting out of the feeder container.
Feeders NEVER should be left in the viv with the dragon. They can chew on the sleeping dragon at nights and leave nasty infections.
Any kind of particle substrate is not recommended for young dragons, due to the particles absorbing the "litter" and breeding bacteria as well as impaction.
Ceramic tile, paper towels, newspaper, non adhesive lining are all good substrates.
As for the colors, what kind of UVB are you using, how far away is it from the dragon. What are you using for heat, and how do you measure your temps ?
It is common for a bearded to darken to absorb more light, when stressed, and when active, shows lighter colors.
Once again, once your little one gets acclimated, and this can take up to as much as a month, you can lay your hand down in front of him, sliding slowly under neath him, supporting his front, belly and back legs. If he is really squirmy, you can use a towel to "burrito" him and hold him against your chest.
Also by placing an old tee shirt with your smell on it, will help him to know you are his slave, and are safe to trust.
Hope this all helps out! Ask for clarification on anything you didn't understand !
Janie.