Art Historical Reference

For phase two we had a art historical reference project where we had to copy a painting or illustration. I choose a Mark Rothko painting (my favorite painter), who painted mostly large blocks of color. The website for his work is http://www.nga.gov/feature/rothko/ I had a really hard time with this project. My first idea was to make a collage of images I took that were all the colors of the painting. In the end I didn't have close to the amount of images I would need to do it. So I came up with this idea. I'm really happy with the ay it came out. Let me know what you think!
This is the original image.

And this is what I did for the reference.