3D Modeling, Rendering, and Previsualization
The following image is made of only 3 colors: green, orange, and purple. The columns of blue color you perceive are an optical illusion.
Zoom in on the image above. The "green" and "blue" colors in the top image REALLY are both green.
If you need more proof, download the layered Photoshop file (PSD) here. (Be sure to Save File As...)
