Early versions of Netscape 1.1 had a bug/feature whereby it was possible to create a "shimmering" effect by specifying multiple BODY tags in succession, each with its own BGColor value. As each BODY tag was parsed it would display the specified color. This was fixed very soon after it was found, but authors considered this a "feature" for a while and its use spread for a time.

This document contains 256 successive BODY elements, each with bgcolor. Starting from #000000 (black) to #ff0000 (red)