The Forgeworld Grot Bomb Launcha is probably one of my all time favourite models. I have three of these, one is finished, the other two are a work in progress.
I found the chassis of one in of the boxes with my Land Raiders. Having painted the chassis with a spray of Citadel Zandri Dust, I used some other brown paints to paint the boxes on the chassis. I painted the exhausts and the rear deck with Leadbelcher. I then gave the model a wash using Citadel Shade Agrax Earthshade.
I then drybrushed the model with various shades of brown. I found the tracks. These had been undercoated black. I gave them a heavy drybrush of Gorthor Brown, followed by a lighter drybrush of Leadbelcher.
I also used Leadbelcher lightly on the motorcycle engine.
I had already painted the fuel tank.
More work to do.