This is the Debian Linux prepackaged version of floatbg, which slowly
modifies the color of the X root window.

This package was put together by Joey Hess <joeyh@debian.org>, 
from sources downloaded from:
	http://sunsite.doc.ic.ac.uk/usenet/comp.sources.x/volume5/floatbg/

The only documentation of floatbg's status with regard to copyright is in
the README file, which states:
        
        Floatbg is free and yours!
        I would like to hear about changes people made on it.

I take this to mean that floatbg is in the public domain. I have attempted
to contact the author, but haven't had any success so far.

Also, some of the code has this copyright: 

/* 16bpp and 32bpp support added by Dave Holland <dave@zenda.demon.co.uk>
 * Code taken from xsetroot by Mark Lillibridge
 * Copyright (c) 1987,  X Consortium
 */

Which means it comes under the standard BSD copyright.