Halo theme on a Spark component

I have a Flex form made up mostly of MX components. Due to limitations with开发者_运维技巧 the MX mx.controls.ComboBox, I'd like to use the Spark control, spark.components.ComboBox. This works, except the Spark ComboBox sticks out visually because it doesn't use the Halo theme.

Is there a way to have the Spark ComboBox use the Halo theme?

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I answered a similar question a while ago.

You could just set the default skin for your application to Hero instead of Spark. Assuming you're using Flash Builder:

1. Click on Project -> Properties.
2. Click Flex Theme from the properties list.
3. Expand Adobe Themes - Halo and select the Halo theme.