I painted my block and manifold with regular high temp black from Napa, and used Gillespie 24087 on the valve covers and some accessories and they have held up great after 2 years of driving.
As far as differences in color, heres mine painted with Gillespie 24087;
And Gunny's painted with Gillespie 24052;
Dave
1967 Kaiser Jeep M715 weapons carrier:http://www.davidallenracing.com/M715.htm
1967 Kaiser Jeep M35a2 2.5 ton cargo truck: http://www.davidallenracing.com/M35A2.htm
Delta Team Decals: http://www.i2k.com/~schwarzd/