I know colour is personal taste, but here me out here. I find the main Raspberry Pi site to be colourful, inviting and representative of the colours I associate with the Pi.
Then there is the Raspberry Pi meta site, who's colour scheme is very dark, black/grey. I personally find this uninviting and other people may find this as well. Which is a shame because this is the site where we can make changes to improve the main site.
So perhaps a colour change, or more information on the main site would encourage people to use the meta site more?