These three images are three different files with pixmaps of different sizes. If percent units work for the AREA element in your browser, all three can use the same coordinates and the same MAP.
Does it work on your browser? If so, as you enter each shape, the name of the color should appear in a text bar near the cursor or in the title bar of the browser. It probably only works in the smallest image as of this writing.
John S. Urban, Feb 23, 2008