Hi Beccer,
We rent so we couldn't paint the walls anything other than white. But we finished our boys dressers in chalkboard paint. My boys LOVED it. It sort of became the theme in the room. And the boys love to color & draw all over the dressers. So if you had a girl she could draw flowers & hearts and girly things. Our boys like to try to draw dinosaurs and monsters. Of course one of my sons picked out a sponge bob poster and bedding, the other son picked out spiderman.
It's best to just keep it simple/neutral and allow the children to pick out something of their own for the room. It gives them a sense of identity. My boys really needed this. They are very close in age (8.5 months apart), so having their own identity is a huge issue for each of them.
Also we had hardwood floors and went out and bought a huge area rug for the boys room. Bad idea. Our son developed asthma recently and we had to take all of the carpets out. So hold off on carpeting.
The boys also picked out a basketball hoop/tent thing from IKEA for their room. It goes with the black chalk board paint and has some color in it.
Just watch out taking your children to IKEA. We always end up with more than we went in for. they have some great little kids things. We just recently got a really cheap step stool for the bathroom there. They also have great plastic storage containers.
Oh and don't go too toy crazy. We did this and it was such a big mistake. Our sons never had so many toys in their lives. It was and sometimes still is a little overwhelming for them. They have 4 huge toy boxes, ones that I can actually sit in (so they're big) and there are toys that still can't fit into them. Remember their former toys from previous foster homes probably won't be sent along with them. I'm not quite sure why fp don't do this, but neither one of my boys came with toys. I could go on and on about the whole toy issue. It's always a big issue with my boys.
LeenaB