Theme suggestions

Removed the doctype (Tumblr automatically prepends one with every page served, check the page source), made FartScroll.js and the twitter widget only load if the option is enabled, and prevented the meta customization tags from being served on every page with {block:Hidden} (undocumented, check Optica's code for proof they exist). Also just cleaned up a few tiny CSS things like color shorthand and removing the ol from the #posts selector (I can only HOPE you're not planning on having another element with that ID on the same page)