My motto is: anything started is half done. This is your start to a world of quilting. I do these blocks all the time and do not consider them ugly,yours or mine. 4 Square blocks are like old friends, they age but they don't change and someday you will look at this quilt and say, well done, my very first and give it a hug.
Get on with it, dark blue would be my choice.
Carol J.