Here's a QtCurve theme to match my Ember plasma theme. I've tried to make the elements match with the plasma theme as much as I can make QtCurve allow. This will look best using a flatter icon theme, such as Hycons.
I didn't picture it here, but if you are using the latest QtCurve, you can set transparency for windows and dialogs to 80% to match the Ember window decoration and plasma theme backgrounds.
Don't forget to download the matching color scheme this was made for...