Has anyone made a test picture that simply shows all the available shades of red in one screen?

I’ve read there are supposed to be 4 colors with 32 intensities…

With 384×224 pixels, it should perhaps be possible to make vertical bars three pixels wide – or isn’t it possible to display all of them at once?

It would be nice to see how it looks, for inspiration…

A prior (failed) attempt at multiple colors:

http://www.vr32.de/modules/newbb/viewtopic.php?post_id=5082#forumpost5082

Well, I understand there are four basic colors, but what about the 32 intensities?

Is there any program showing all four colors and change between the intensities or perhaps display all colors and intensities in an other way – not at the same time?