Susan and Len,
The Denrus tour sounds good but there are 7 of us traveling together and St. Petersburg is one destination that we have similar interests in.
Now to the serious stuff...the clothes!! I'm going with black..you're right it's the easiest way to go and less to worry about.
I heard that it gets warm in the summer in the baltic area...is that true? I always thought of the scandinavian countries as rather brisk/cool weather.