Zadornoff, I dont know where but I know some of your themes. I saw tham somewhere but dont remember where. They are really seems attractive with their standby screens.
But I think your themes have some funtionality problems. I mean they are nicely designed but readability is very important. M600 and versions are not easy phones and hard to manipulate with busy screens. When you use transparent highlights the text is disappearing on the background.
For example your last theme Clownfish, messaging text is not seen at all, and it is impossible to see the dimmed text on the checkbox.
If you can have a good balance with the text and the backgrounds your themes will get very good. The designs are superb, just be carefull about the text to be readable easily.
Just my opinion.