In Reply to: Research Information on Affectiveness of Color-Use in Advertising posted by Mark F. on November 08, 1997 at 02:00:16:

Go to the following URL for an informative article regarding the impact of color on advertising effectiveness.
http://www.chiltonco.com/mktgsvcs/color.htm
Though the article doesn't address which colors work best for which industrial products, I seem to remember reading an article stating that any of the primary colors (and specifically blue, white, red, green, and yellow) are best for advertising to the industrial manufacturing sector.