With Lester I applied the pigment bound with egg yolk, and then at the suggestion of Walter O'Neil I varnished it with egg whites. The egg whites are what are giving the blue truck, Lester, the sheen.
Note: The white truck is a 1982 Ford Courier, the best rig my host has ever owned. 270,000 miles and no major work. Above the Courier is his current rig, a 2005 Toyota Tacoma with low profile tires.