Comment 2 for bug 506590

Interesting idea. We could use some setting like "global illumination" or "global direction" (since this might be used for something more than just lights and shadows). This could be a Document propierty and scripts could be rewritten to take their settings from this propierty. When changed, all effects would change accordingly.

@HyperHacker: I don't know what you mean. What does system colors has to do with this request?