Paint resistant plastic

Looking at the Grandt Line website, I really didn't like the yellow finish they show on the model. I know these things live in mines, but I associate yellow painted tubs with more modern metal versions. I thing dirty wood is the way to go.

My plan was to use the Lifecolor wood set, but when I tried the paint on the plastic, it didn't stick. Colour (should that be "color") pooled up as though I was painting on grease. I don't think it was mould release, just a shiny plastic and not very sticky paint.

The solution is of course, a spray of car primer. Grey seemed to be the best colour for worn wood and application went well, even though I didn't shake the can for 5 minutes, because I am a rebel.

After this there was no problem with paint. A couple of coats of Warm base colour followed by dry brushing with Warm light shade 2 and a bit of Cool base colour. Working quickly, the colours all blend a little to give a nice result. Not bleached, these things would surely not see enough sunlight, but brown enough that when they get filthy in the next step, the result will look OK.