I picked up a bottle of the Polly US Med Green, and tested it vs. a lightened Euro Dark green. I didn't get it quite light enough, but no matter as it has way too much blue in it. I also tried out a lightened Topside green, which was closer, but also too blue. Seems too much trouble to keep mixing to match it. If I end up using Med Green, I'll just use the acrylic and keep my enamel air brushing on top.