Great take on the monochromatic color challenge this month! I love all the different shades of brown, all the way from very light coffee cream to rusty reddish brown. Brown, like gray, is underrated as a color, IMHO. Again, your pictures are fabulous, and you found the perfect niche for them in the template you chose.
Nice layout for a nice museum! Looks like it would be a great one to meander through. The triangles or arrows remind me of a quilt block called Flying Geese! Love the color choice.