New Etch theme

I've been playing a bit with a new theme, just to learn how it all works.... and have overcome several of the main issues I was trying to address (like a story-river that grows when the window is expanded).  I'm not sure this is really ready to be merged into the main branch just yet... but I'm not sure of the best mechanism to get others to try/look at/comment on it -- so I'm trying this as a pull request and soliciting feedback.