It wouldn't work, because the colors are placed in the optical path with the least focusability for smoother color mixing. A donut has to be on the front of the fixture. I always got confused by the MAC 2000 Profile's wheel three, that has both color and gobos on it.
Plus, the arc lamp of a ML is much closer to the theoretical point source than the filament of an HPL or FEL, thus negating the need for a donut. When I get to SteveB's, we'll put stainless Jungle Leaf in gobo wheel 1, and a "flag of Japan" two-color glass gobo in gobo wheel 2, and see how that works. But it won't be the same effect as a color donut in an ERS.
Plus, the arc lamp of a ML is much closer to the theoretical point source than the filament of an HPL or FEL, thus negating the need for a donut. When I get to SteveB's, we'll put stainless Jungle Leaf in gobo wheel 1, and a "flag of Japan" two-color glass gobo in gobo wheel 2, and see how that works. But it won't be the same effect as a color donut in an ERS.
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