Hiya! I received a Juniper bonsai tree from my hubby for our anniversary. I got it via mail and was wondering on how to take care of it. I did keep it indoor for two days because I didn't know it was an outside bonsai but after doing some research I found out it is indeed an outdoor bonsai. So I have kept it out on my window ledge (don't have a backyard) for about 3 days now. I have had this Juniper for only 5 days and it seems that when I received it, it was semi orangey-brown on the branches(?) but it seems to now spread (so it seems to me). And if I look closely today I can see little brownish tips on the buds. But I also noticed it has grown since I got it.
I also understand that I am not to water it on a schedule and only to water it when it needs to.
First picture is when I received it, you can see some parts brownish.
Recent pictures is from yesterday and today. On the far left you can see it looks very healthy (at least I think so??) but as far as the orange-brownish areas, it seems to only seem drier than when I got it. The pebbles aren't glued on either.

and
Any advice is greatly appreciated! I just hope it's not dying and if it is, am I able to save it?