private boolean canParseColor( String value ) {
		try {
			return UIDefaultsLoader.parseColor( value ) != null;
		} catch( IllegalArgumentException ex ) {
			LoggingFacade.INSTANCE.logSevere( "FlatLaf: Failed to parse color: '" + value + '\'', ex );
			return false;
		}
	}
http://www.jetbrains.org/intellij/sdk/docs/reference_guide/ui_themes/themes_customize.html#custom-ui-control-colors
flatlaf-core/src/main/java/com/formdev/flatlaf/IntelliJTheme.java