I looked through my photo files and found that one which I once called "Play with Photomatix HDR" - I made that one back in 2007 when I played around with that programme a little. And among the photos there, I found this one. Loads of pp-steps have been applied here, but it is too long ago for me to remember what all I did. It must at one stage have gone through Photomatix, too, else it wouldn't have been in that folder. What do you say about black&white HDR (which is just tone-mapping, as far as I know, made from three differently saved TIFF-files of the same "photo")?