When I got on the waiting list about a month ago the dealer told me the following percentages of Prius car options and colors that they've been getting.
Options:
%40 BI (#6)
%20 AM (#7)
%30 BC (#9)
Colors:
%15 Blue
%15 Red
%30 Silver
I suspect the numbers could be different at other dealers and especially in other parts of the country (I live in NH). Toyota might change the proportions in the future as well. But I thought I'd pass this info along anyway.