I really like #4. If you're wanting to add blues I would do that one. I just read through many of the comments. When I reviewed them again. I still like 4. I love that it has blue, green and yellow in it. It reminds me of a warm fall day. My eye kept traveling around all the blocks looking at the different colors. The one color looked on the burgundy side of brown I liked that as well. I hope you keep us posted on your choice and the finished project.