Fix a color issue on macOS

On a Mac with an HDR display it would render colours incorrectly in the PDE

app/build.gradle.kts

@@ -72,6 +72,7 @@ compose.desktop {
                 entitlementsFile.set(file("macos/entitlements.plist"))
                 runtimeEntitlementsFile.set(file("macos/entitlements.plist"))
                 appStore = true
+                jvmArgs("-Dsun.java2d.metal=true")
             }
             windows{
                 iconFile = rootProject.file("build/windows/processing.ico")
@@ -542,4 +543,4 @@ afterEvaluate {
         dependsOn("signResources")
         finalizedBy("setExecutablePermissions")
     }
-}
+}