Add color palette.

Found this at http://www.colourlovers.com/palette/126448/sad_cloud and
imported it into the framework overrides file. I'm shooting for
something smokey. Haven't done much besides color the main horizontal
bars.

: #colors
Add splash text

Used some of the intro text from the PDF to generate a splash page.
I put the text inside a well and did some jiggering with positioning
that feels kind of dubious, but looks pretty good, actually. I also
included a link to the Transneptune site to download the original PDF.

The color scheme feels pretty good here. I'm a little concerned about
the body text being hard black, but not sure what else to use. Also
thinking about setting a fixed page height but uncertain how to do
that on multiple display types.

: #splash #copy