Spiritdude/OpenJSCAD.org — pull request #17 by tedbeer (2013-04-11 15:34:24+00:00)
Title: alpha channel is supported with OpenGL limits

Alpha channel is supported with known OpenGL limits (http://www.opengl.org/wiki/Transparency_Sorting).
No demo provided.
Use method .setColor([ r, g, b, a]) where r, g, b, a - floats [0..1]