Converting anaglyph 3D photo to format Facebook recognizes as “3D photo”

I had an idea to try to upload an anaglyph photo to Facebook and it turned out it recognized it as “3D” and gave me the option to convert. So I did. It worked just fine, but the red and blue was still kept in the image.

Does anyone know how I can keep the “depth” in this image for Facebook to recognize, but remove the visible red and blue coloring?