Wow, that BMP image sure helped explain what you were seeing wrong about it! I hadn't thought of the graphics card reason.
On that other thought... I'd be happy to see an update including the caustics effect (dappled light) for the customized images with on/off switch. Which usually makes most sense to set as off by default to remedy the potential problems of peoples logos not looking right before settings are user-modified.
So... when will there be a laser-light show in the crystal? Or electric arcs, or...?