The Telegraph has joined forces with Color to bring together live eye-witness photos of the royal wedding and the celebrations going on across the country, effectively creating a snapshot of Britain on the 29th of April 2011.   Color is a free iPhone application that allows people to capture and instantly share photos, video, and text. To celebrate the royal wedding, The Telegraph and Color will provide a live stream of photos taken using Color anywhere in Britain. From street parties in the Highlands to the royal procession on the Mall, all photos will be displayed as a mosaic of images on telegraph.co.uk/color and http://www.color.com/royalwedding, alongside live video coverage of…