[Inkscape-user] Additive color mixing of transparent objects?

Hi Can someone clarify the mixing of colors of transparent objects for me? Is it possible to use additive mixing of transparent objects. Im not sure if I use the correct terminology, but I mean like mixing colored light and not colored paint, so that a green transparent object overlaying a red one will be yellow and not brownish? Or do this exceed the SVG format? The mixing seem to be somewhere in between the two possibilites?

Esben

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