That's what I said all along was to change the icon yourself from the phone, whenever I load a theme of mine even changing the default folder in Theme Builder it would show the default folders with the icons and you would have to change the names for the default folders to work...
I have changed the default folder in every theme of mine but when loaded on my Storm and my Javelin (running either OS 4.6 or 5.0 on Javelin, 4.7 or hybrid on Storm) it shows the folders on initial load of the ones with the logos and then if I want to change it to the folder to match the theme then I have to rename the folder for it to show. But I can always go back and change the icon to the original ones
Screen shot from my Javelin:
