I have given up searching for elementary art sites to point out to you....So
many are off line or not kept up (I went through 11 pages of Google).
Besides - you list members have the best ones out there (smile). Here are
some projects I found in my searching.
Paper silhouette against warm color painted background
I have done this project with a chalk stencil background - students chose
warm or cool.
You could do this on an architecture theme (Russian architecture would be
fun) - or cultural theme - animals - landscapes -