Well the boys are painted/colored with aquarell paint but the universe thingy and the moon and stuff are colored with acrylic paint.... And u may not see it, but there are some golden highlights on the boys and some silver ones in the sky and on the moon...

I also used a pic to draw/paint this where they were shown from the front not from behind.
Probably the reason why some of their heads look a little weird like ew what's that. I'm not good at drawing people from behind and in this case I had to imagine what they looked like from behind while seeing what they look like from the front if u get me 😅...

I also wanna add here that I nearly never draw/paint using acryl sooo that'd be another reason for this not looking that good.