it is a small tool that visualizes the behaviour of the opengl blendmodes.
since it is maybe useful for some of you guys, i packed it in a jar and made it java-webstartable

you can webstart it here

any feedback is welcome! (even if it is completely senseless, tell me )
i would especially be happy to know if it runs on a mac, since that is the only platform i couldnt test it.