log cabin pattern

So it's coming together now! I'm trying to figure out which type of setting I want to use in my log cabin blanket and now that I have three squares, I can get a better idea of what the settings will look like. Actually, it'll be even easier when the fourth square is finished, but this is just so much fun I had to do it! So... thoughts? Which one is most visually appealing? Sorry for the background - it's the sheet on my bed!