looking good- i love your useage of primary colours- reflects the fashion of interior design in the 13th century- dover castle is a fine example of what was considered stylish back then http://www.kent.gov.uk/filmoffice/fi...Web%20view.jpg
perhaps for the middle eastern factions you could use motifs from the likes of cordoba mosque
http://stevefazzio.com/images/Portug...oba_Mosque.jpg