Nice!
Interestingly, this is the same basic block as what I'm using for a swap right now. Two wide strips with a narrow one in the middle, cut on the diagonal. The get arranged to make a diamond pattern, which is the secondary pattern showing up here (the light square outlined by green) when the two blocks are sewn together.
I wanted to make a wall hanging for St. Pat's day, and I think this will work out fine, using shades of green. I put mine together in strips and cut them all at one time - just have to pay attention to the order and alternate wide/narrow strips.
though I did find that sewing 20 strips together and then cutting on the diagonal was a bit much - had to pull out my 36" ruler as my favorite 24" was not long enough!