Before you choose your exact paint colors, find the bedding you love then be sure the colors match well. From your 4 colors choose one as your accent color for all the major items like draperies, throw pillows, lamps, rugs, etc. If you decide to go with green, for example, here are some things you could use:
http://www.target.com/Xhilaration-Fur-Throw-Green-50x60/dp/B000SKQTNY/qid=1234785385/ref=br_1_4/188-9850624-4211361?ie=UTF8&node=389538011&frombrowse=1&rh=&page=1
http://www.target.com/xhilaration-Xhilaration-Marabou-Pillow-Green/dp/B000SKQTKC/qid=1234785429/ref=br_1_48/188-9850624-4211361?ie=UTF8&node=389538011&frombrowse=1&pricerange=&index=tgt-mf-mv&field-browse=389538011&rank=pmrank&rh=&page=1
http://www.target.com/Bacati-Valley-Flowers-Window-Panel/dp/B001144FWS/qid=1234785492/ref=br_1_26/188-9850624-4211361?ie=UTF8&node=369069011&frombrowse=1&pricerange=&index=tgt-mf-mv&field-browse=369069011&rank=pmrank&rh=&page=1
http://www.lampsplus.com/Products/Kito-Green-Table-Lamp__H3461.html
You get the idea, right? Hope this helped.