After painting 2 HQ's for my baby Space Wolf Army I already got tired of painting on the base color of the armour (after primer). So to skip a step I went to the hardware store and found the blue that matches Shadow Blue exacly. It's Rustoleum Painters Touch ultra cover Wildflower Blue. The only problem was that there was no flat finish available, only satin, which is pretty shiny.
Thinking back at my Forgeworld modeling bible and knowing that in that method all the models are sprayed glossy before weathering, I decided to give it a go. And with excellent succes!
Here's the model sprayed blue
Here's a model after 1 generous coat of devlan mud. Because the surface is glossy, the wash falls into the recesses very nicely without pooling up on flat surfaces.
Here are a few more details.
Of course this is just basecoating it, but it makes for a nice start. The armour looks just where I want it!
Maybe give that a go on an old model, it works pretty nicely