[Dancer-users] Plack deployment question

Hi Folks, This is more of a Plack/PSGI question, but I am hoping someone here can help. I am using plackup to test app.psgi with Starlet (and occasionally with Starman) server. My CSS files are being served with content-type of text/plain and end up not being interpreted by Firefox or Chrome (I see unstyled content). This doesn't happen when using HTTP::Server::PSGI. Any idea where I can configure the mime types for Starlet or Starman? Thanks, Deepak