Alternatives to standard RGB separations?

[cengman]

I'm curious about gum printing and trying to read up, look at examples and figure out what kinds of things I'd like to try. I really like the look of monochrome or kind-of "split-tone" gum prints made with a warm brown pigment for highlights and blue or cool gray for shadows. I definitely plan to try this out.

I'm also really interested in three-color gum printing to produce full color prints. I can follow the process of using photoshop to make color-separated RGB (or RGBK) negatives and printing with CMY pigments. This is also on my list to try.

I've seen some other techniques though that fall somewhere in between. Brian Taylor is one artist who's work I like. He makes some very nice nature scenes that seem to be in a sort of pseudocolor. Instead of printing three colors in CMY, it looks like he uses cyanotype plus a few different browns and grays to cover earthy tones in water, rocks, tree-bark etc, and maybe a layer of green pigment for foliage. I'm wondering if anyone has any ideas about how to use filters/masking to create negatives to accomplish this type of result.

 

[ced]

Why not give a link to the type of work you refer to?