* Make the drawing smoother/anti-aliased. * We use the alpha to blend between the background and the zone color. * If alpha is 100% we then get to see the dotted background again * Change zone corner radius to match nodes/layout. If we want to set the background transparent again we need to do: ``` - immUniformThemeColorBlend(TH_BACK, TH_NODE_ZONE_SIMULATION, zone_color[3]); + immUniformThemeColor(TH_NODE_ZONE_SIMULATION); ``` For the design behind some of those change see #106810 Pull Request: #107043