I'm having trouble knowing what color window coverings I should use in my living room/dining room. The windows for both areas are on the same wall. The couch is dark green with red throw pillows for accent color. The walls are beige and the floor is a light laminate. I am trying to keep the living room casual. Should I be using a solid beige color to match the wall color or a multicolor that will have some of the colors from the room. There are white blinds that must stay. What types of material can I use that will still leave the room casual.