Aloe Vera Color Change

Your aloe should do fine outdoors as long as it doesn’t freeze – possible by you but not likely. First thing is the soil looks too wet and heavy. I would let it go fairly dry between waterings, just not completely dry. Consider eventually repotting and using some extra Perlite or pumice to loosen up the mix and help drainage. Moving into the sun is a good thing and they rarely have that bright green color when grown outdoors. In fact in full sun they usually take on kind of a bronzey-pink cast to them. They will also grow in a much tighter rosette with the leaves more upright rather than splayed out the way they look now. I would suggest making the move to full sun gradually starting with filtered sun so as to not possibly burn it due to its tender “indoors” skin.