Upgrade to Flex 4, Halo theme, embedded font doesn't work for Spark Label

Question

I'm upgrading an application to Flex 4 from Flex 3.5 using the Halo theme.  If I include a Spark Label in my application the Spark Label does not render the text using the font I defined in my CSS.  My MX Labels render fine.  Here is an example application that replicates my issue.  So,
Compile and run using Spark theme.  Both Labels render the text with the correct font.
Compile and run using Halo theme.  Only MX Label renders the text with the correct font.
Is it not possible to do what I want?
Thanks
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
                  xmlns:s="library://ns.adobe.com/flex/spark"
                  xmlns:mx="library://ns.adobe.com/flex/mx"
                  minWidth="250" minHeight="250">
     <fx:Style>
          @namespace mx "library://ns.adobe.com/flex/mx";
          @namespace s "library://ns.adobe.com/flex/spark";
          @font-face
               fontFamily: Verdana;
               fontWeight: normal;
               fontStyle: normal;
               src: url("./style/fonts/verdana.ttf");
               embedAsCFF: false;
          @font-face
               fontFamily: VerdanaCFF;
               fontWeight: normal;
               fontStyle: normal;
               src: url("./style/fonts/verdana.ttf");
               embedAsCFF: true;
          mx|Label
               font-family: Verdana;
          s|Label
               font-family: VerdanaCFF;
     </fx:Style>
     <fx:Declarations>
          <!-- Place non-visual elements (e.g., services, value objects) here -->
     </fx:Declarations>
     <s:VGroup>
          <mx:Label text="My text" />
          <s:Label text="My text" />          
     </s:VGroup>
</mx:Application>

Answer 1

I think you might need to set the fontLookup:
        s|Label
            font-family: VerdanaCFF;
            fontLookup: "embeddedCFF";