Hey pon10, I found something!!
I contacted Kent from MaxKeyboard and he told me they have a set of "Ivory" White keycaps with ISO layout that is not listed in their website yet.
You can choose between: Russian, Belgian, Danish, French, German, Hungarian, Italian, Norwegian, Portuguese, Spanish, Swedish, Swiss and UK of course.
The spacebar though is available only in 6 or 6,25 (6,5 spacebar is not backlight and has a brighter white).
If you and other users are interested you can contact Kent at kent@maxkeyboard.com
Here are some pictures he send me via email. (This is ANSI but he assured me that ISO is available)