Nor are you limited to solid colors. This was a bit of an experimental treatment for a holding tank for excess plants and fish, a sort of "junk" tank. Since it would potentially be thin on plants at times, I wanted a background with some built in depth and complexity.
Painted in about nine layers, the colors range from metallic golds and copper to various greens, blues and browns. The final coat was a solid dark pine green.
And how it looks planted: