griffon-app/resources/styles.css

* {
   background-color: #999999;
}

griffon-app/lifecycle/Startup.groovy

...
import griffon.builder.css.CSSDecorator
...
CSSDecorator.decorate("styles",app.appFrames[0])
...

...
22-dic-2009 19:50:12 com.feature50.clarity.css.CSSUtils getColor
ADVERTENCIA: background-color value ('rgb(153, 153, 153)') not understood
java.lang.NumberFormatException: For input string: " 153"
        at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
        at java.lang.Integer.parseInt(Integer.java:449)
        at java.lang.Integer.parseInt(Integer.java:499)
        at com.feature50.clarity.css.CSSUtils.getColor(CSSUtils.java:132)
        at com.feature50.clarity.css.DefaultCSSPropertyHandler.processStyles(DefaultCSSPropertyHandler.java:154)
        at com.feature50.clarity.css.CSSPropertyHandlers.handle(CSSPropertyHandlers.java:40)
        at griffon.builder.css.CSSDecorator.applyStylesheet(CSSDecorator.java:160)
        at griffon.builder.css.CSSDecorator.decorate(CSSDecorator.java:132)
        at griffon.builder.css.CSSDecorator.decorate(CSSDecorator.java:76)
        at griffon.builder.css.CSSDecorator$decorate.call(Unknown Source)
        at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:40)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:117)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:129)
        at Startup.run(Startup.groovy:20)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:86)
        at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:234)
        at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1049)
        at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:917)
        at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:880)
        at groovy.lang.Closure.call(Closure.java:279)
        at groovy.lang.Closure.call(Closure.java:274)
        at groovy.lang.Closure.run(Closure.java:355)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:199)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)