You can download the icon sized graphic from WP or the marketplace and drop it into Google Image Search. From there it's easy to find the original sources where they got it from, like this one: http://clipartist.info/clipart/Egypt/camel_with_rider_2-3333px.png Use a color selection tool to fill it in with the same green color. It seems to generally be called "Camel with Rider", and there are color versions, like here: http://clipartist.net/uncategorized/camel-with-rider-openclipart-org-commons-wikimedia-org But they obviously modified it. At least it's Creative Commons licensed. We wouldn't want SR to break the law!