You can use this RSS feed.
Look near the start of the code, and you will see a list of URL's. Simply replace all occurrences of "google.com" with "google.de" or whatever you use.
Because Firefox doesn't support targeting all top level domains. I would have to explicitly list every single one. For now, google.co.uk, and google.ca are listed. You can edit the list of URLs to add your own country.
Probably not. Gmail already allows you to pick a different theme, and Google Reader I just don't mind being white. At one point I did make dark versions of both, but they never turned out as well as I'd like, so I never released them.
Nope, not going to happen. I prefer the original minimalistic design of Google.
Sorry, but since I'm not getting paid to make these styles, I try to keep work to a minimum.
You're welcome to modify or use the styles in any way you want. I make these styles for myself, so if you can do something else with them, go right ahead. I only ask that you give me some credit, and maybe email me about it.
It's just a shortened form of my name "Valacar" that I sometimes use to sign my work.