I have to agree with Tom, after looking at the blues from the website used in some of the artists renderings I see no reason these could not be reproduced with typical CMYK. A good prepess department would be needed to make separations as these are more than likely not in a digital format. This would be the key first step. Once on press, if it has Image Control or Inpress (Heidelberg) matching the color and keeping it consistant should be a walk in the park.
Looking at the website I could not tell if there is any gloss due to the paintings being done with oils or water, if there is depending on the gloss level desired you could go either aqueous or UV.
All in all, the works should be able to be reproduced on an offset printing press.
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