I found that the convergence plane distance is extremely important to Anaglyph 3D rendering, in terms of how the result looks. However, I created this blend file at pasteall in order test it for google cardboard, and I rendered the file in side-by-side mode (be warned it will still preview in anaglyph mode) and it appears to have very very little effect on the result.
As you can see there are keyframes placed on the plane; render it as a video with blender render.
How, exactly, and I supposed to use this plane for normal color side-by-side rendering? Thanks in advance.