Because I'm a big fan of Game of Thrones, their Houses and respective sigils (HBO link) here are some themes with their colors. Hope you enjoy and, if in the mood, make some comments or new themes.
Dowload all 7 themes. Or individually, below:
House of Arryn – download
House Baratheon – Download
House Greyjoy – Download
House Lannister – Download
House Stark I – Download
House Stark II – Download
House Targaryen – Download
House Tully – Download