I used to shoot 8x10 color negatives of products and make large-quantity of color contact prints, with type stripped (litho neg of type) in. I made myself a contact printing box with lid, a piece of opal glass, and a surplus dichro head aimed from the side into the interior of the white painted box which has some styro baffles inside to even out the light on the glass. I arrived at the correct even illumination by taking light-meter readings of the glass at various points.

But, more simply you can just use your contact printing frame and use the light from your dichro head enlarger, just as if you were making bw contact prints.. 8x10 color contact print from 8x10 neg looks real good. Modern color paper is very sensitive to light, so you will need to stop down your enlarger lens to get reasonable exposure times.