Water thoroughly when he's completely dry. DO NOT water based on an amount of time, but on the feel of his soil. Stick your finger maybe 2-3 inches in every few days. Once it's totally dry, water until it drains out of the bottom. If you do this, and he's in good well-draining soil (which he appears to be in! good job!), you won't have to worry about overwatering at all! The soil will take care of draining out any excess water for you.

Also, aloe can turn red from lots of sun/heat. They can definitely handle plenty of sun if you give them enough water, and give them 2 weeks to get slowly get acclimated to it. Gradually give it more and more sunlight until its in the level of sun you'd like it to get daily. The lack of water combined with the sudden change of little sunlight to too much sunlight may be causing this appearance.

I'd definitely give it a bit of time to stabilize with consistent proper watering and normalized levels of sunlight, before doing anything involving unpotting, pruning, or removing the pups. Unpotting/repotting can cause a lot of stress. Let it heal and get used to its new environment first :)

You can also check for dryness of the potting mix with a skewer or chopstick, even a pencil. Insert it into the soil for a minute, down deep enough to give a reading where the roots are situated in the pot. If the stick is damp or feels cool, don't water.

My A. juvenna looks different from yours. Mine is growing in full sun all year long. My summers are quite wet, but these guys are on a slope in gritty mix so they must drain well enough. My winters are quite dry. That is when I get the best color from my plants.

This is one bunch of A. juvenna during the wet summer -

And this is the same plant during the dry winter -

I have heard other people say they remove the dead and dying leaves so they don't rob nutrition from the plant. Actually, as leaves age they are reabsorbed by the plant. The water and nutrients go back to the plant and new leaves take the place of the old ones.

That said - I do remove old leaves because I think they are ugly! LOL

Agree with what daxeek said...

It is definitely etiolated. That color - from reddish to darker, almost brown - is desired by many. It happens in strong light. Acclimatizing any succulent to full sun is important for any plant, to avoid sunburn. Which is different from suntan :)

Just MO, but it is overpotted - pot too large for plant. But you could leave it in it, since this plant should grow fast and will fill up that pot eventually. In the meantime, it is important to make sure it doesn't sit in soil that is wet for too long. Big pot = lots of soil/mix = takes longer to dry up. Easiest way to find out how dry it is would be using bamboo skewer (or chopstick, thin dowel or even pencil). That way you can insert it deep inside - more important to know how wet or dry it is deep in the pt. Top will dry up fast, but roots are deeper and will rot if in wet medium for long times.

IF MY plant, I would cut it quite a bit. Something like this (just a suggestion): yellow line is where I would be trimming off long branches and leaving rest (with roots) in the pot; these should continue growing. Blue line suggest trimming long cuttings, they are just too long. But you could cut them into few pieces:

Crenda grows many outside (great weather in Fla!), bring them indoors for winter. But you have to assure good light, otherwise it will keep growing same.

Above all: do not be terrified :)

ETA: Crenda posted great post and photos...and, pls. indicate where you are (best to put that info next to your name as others do).

The etiolated bits will not go away with sufficient sun. The etiolation will stop and new growth will be normal. You will need to remove the etiolated growth to get a normal looking plant.