I won't discuss this too much however I am not the biggest fan of the "one thick coat" as I think it works for some colours and some colours just look saturated and flooded. Saying this, Contrast Paints might be the savior for many a painter.
I have been experimenting quite a bit with the contrast paints and overall I wasn't satisfied with applying them directly over the recommended primer. However, I have found an excellent use for them, that is as a glaze or a wash over a colour similar to the contrast paint.
|My contrast paints on a 3D Printed Paint Rack|
|Using Contrast Paints as a glaze|
|The Robes came out really vivid and blended in the layers using Contrast Paints as a glaze|
When I painted the red, I simply went Vallejo Dark Red followed by Vallejo Scarlet and washed it with Contrast Paints Blood Angels Red straight from the pot. I think it looks rather nice.
|Using Contrast Paints as a wash|
|Using Contrast Paints as a wash gave a very rich and deep red|
Prior to this I painted the flesh of a giant using the same principal. I applied my flesh colours then thinned down Contrast Paints Guilliman Flesh and used it as a glaze over his flesh and the results I believe are excellent.
|The Giant on the right used Contrast Paint Guilliman Flesh as a glaze|
So get painting and do some experimenting with Contrast Paints. I think they are one of the most over-hyped products by Games Workshop but they do have their use depending on your skill level and patience. I am far from finished with them!