I recently got some of the new GW contrast paints to try out and painted an old set of 15mm Star Wars Rodians with them (Blue Moon Miniatures Aquans). There's a bit of an explanation on my blog about the paints and how useful they are, also more pics of the figures. Who else has used them and what did you think?
https://www.stormofsteelwargaming.com/2019/07/Star-Wars-Rodians.html
