diff --git a/Gemfile b/Gemfile
index 1dff337..3a443fc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,2 +1,7 @@
 source 'http://rubygems.org'
-gem 'github-pages'
+
+require 'json'
+require 'open-uri'
+versions = JSON.parse(open('https://pages.github.com/versions.json').read)
+
+gem 'github-pages', versions['github-pages']
diff --git a/_config.yml b/_config.yml
index 21ddc3d..ba38a87 100644
--- a/_config.yml
+++ b/_config.yml
@@ -1,8 +1,9 @@
 name: Tyler Hallada - Blog
 description: Musings on technology, literature, and interesting topics
 url: http://hallada.net/blog
+assets: http://hallada.net/assets/
 markdown: redcarpet
-pygments: true
+highlighter: pygments
 paginate: 10
 paginate_path: "blog/page:num"
 gems:
diff --git a/_posts/2015-06-03-midnight-desktop.md b/_posts/2015-06-03-midnight-desktop.md
new file mode 100644
index 0000000..cfb56d4
--- /dev/null
+++ b/_posts/2015-06-03-midnight-desktop.md
@@ -0,0 +1,257 @@
+---
+title: Midnight Desktop
+layout: post
+---
+
+I tend to use Linux (Ubuntu) on my desktop late at night in a dark room. To
+protect my eyes from the blinding light of my monitors I've tooled my desktop
+environment over the course of a few months to be as dark as possible. It has
+gotten complex enough that I thought it would be worth sharing now.
+
+###dotfiles###
+
+Before I begin, I want to note that all the configuration for the setup I'm
+describing is stored in a [dotfiles repo on my github
+profile](https://github.com/thallada/dotfiles). If you would like to replicate
+any of this setup, I would go there. Just note that I will probably be updating
+the master branch fairly often, but the
+[midnight](https://github.com/thallada/dotfiles/tree/midnight) branch will
+always contain the setup described here.
+
+###bspwm###
+
+Inspired by [/r/unixporn](http://www.reddit.com/r/unixporn), I decided to switch
+from gnome to bspwm, a minimal tiling window manager that positions windows like
+leaves on a binary tree.
+
+I don't really use the tiling features that often, though. I often do most of my
+work in the terminal and [tmux](http://tmux.sourceforge.net/) does the terminal
+pane management. But, when I do open another application, it's nice that bspwm
+forces it to use the maximum available space.
+
+I also like how hackable the whole manager is. There is a terminal command
+`bspc` that controls the entire desktop environment and a separate program
+`sxhkd` (probably the hardest program name ever to remember) handles all of the
+hotkeys for the environment. All of them are stored in a
+[`sxhkdrc`](https://github.com/thallada/dotfiles/blob/master/sxhkd/.config/sxhkd/sxhkdrc)
+under the home directory and it's super easy to add my own. The hotkeys make
+this superior to gnome for me because I never have to touch my mouse to move
+around the desktop.
+
+###gnome and gtk###
+
+I still love some of the features from gnome. Especially the text hinting, which
+is why I still run `gnome-settings-daemon` in my [bspwm startup
+script](https://github.com/thallada/dotfiles/blob/master/bspwm/bin/bspwm-session).
+
+To make gtk applications universally dark (and also to tune text hinting)
+install the `gnome-tweak-tool`. There should be a "Global Dark Theme" setting
+under the "Appearance" tab that can be enabled. I use the
+[Numix](https://numixproject.org/) gtk theme which seems to behave fine with
+this setting.
+
+###Gnome Terminal###
+
+I've tried using a few other lighter-weight terminals like xterm, but I still
+like the features of gnome-terminal more. I created a "bspwm" profile and set
+the background to be transparent with opacity at about half-way on the slider.
+My background, set in the [bspwm startup
+script](https://github.com/thallada/dotfiles/blob/master/bspwm/bin/bspwm-session)
+is a subtle [dark tiling pattern](http://subtlepatterns.com/dark-mosaic/) so
+this effectively makes the background of the terminal dark.
+
+In my
+[sxhkdrc](https://github.com/thallada/dotfiles/blob/master/sxhkd/.config/sxhkd/sxhkdrc)
+I can then map my hotkeys for starting a new terminal to the command
+`gnome-terminal --window-with-profile=bspwm`.
+
+###vim###
+
+Making vim dark is pretty easy. Just put this in the
+[`.vimrc`](https://github.com/thallada/dotfiles/blob/master/vim/.vimrc):
+
+```vim
+set background=dark
+```
+
+I use the colorscheme
+[distinguished](https://github.com/Lokaltog/vim-distinguished) which is
+installed by putting the `distinguished.vim` file under
+[`~/.vim/colors/`](https://github.com/thallada/dotfiles/tree/master/vim/.vim/colors)
+and adding this to the `.vimrc`:
+
+```vim
+colorscheme distinguished
+```
+
+###tmux/byobu###
+
+I like the abstraction that [byobu](http://byobu.co/) puts ontop of tmux, so
+that's what I use in the terminal. Colors can be configured by editing the
+[`~/.byobu/color.tmux`](https://github.com/thallada/dotfiles/blob/master/byobu/.byobu/color.tmux)
+file. This is what I have in mine:
+
+    BYOBU_DARK="\#333333"
+    BYOBU_LIGHT="\#EEEEEE"
+    BYOBU_ACCENT="\#4D2100"
+    BYOBU_HIGHLIGHT="\#303030"
+    MONOCHROME=0
+
+###evince###
+
+I tell my browser, firefox, to open pdfs in evince (aka. Document Viewer)
+because evince can darken pdfs.
+
+Select View > Invert Colors and then Edit > Save Current Settings as Default and
+now most pdfs will be displayed as white text on black background.
+
+###Firefox###
+
+I had to hack firefox a lot to get it to be universally dark since the web
+(unfortunately!) doesn't have a night mode switch. I'm using firefox instead of
+chrome because firefox has better customization for doing something this
+extreme.
+
+####Userstyles
+
+Firefox has a really neat addon called
+[Stylish](https://addons.mozilla.org/en-us/firefox/addon/stylish/) that allows
+you to install and edit user CSS files to change the style of any website you
+visit. A lot of popular websites have dark themes on
+[userstyles.org](https://userstyles.org/), but the rest of the internet still
+mostly has a white background by default.
+
+Luckily there's a few global dark themes. [Midnight Surfing
+Alternative](https://userstyles.org/styles/47391/midnight-surfing-alternative)
+seemed to work the best for me.
+
+However, since the theme is global, it overwrites the custom tailored dark
+themes that I had installed for specific popular sites (listed below) making the
+sites ugly. The Midnight Surfing Alternative theme can be edited through the
+Stylish extension to exclude the websites that I already have dark themes for.
+[This superuser question explains what to
+edit](http://superuser.com/questions/463153/disable-stylish-on-certain-sites-in-firefox).
+Now, whenever I add a new dark theme to Stylish, I edit the regex to add the
+domains it covers to the parenthesized list that is delimited by pipes.
+
+```css
+@-moz-document regexp("(https?|liberator|file)://(?!([^.]+\\.)?(maps\\.google\\.com|...other domains....)[/:]).*"){
+```
+
+Here is the list of dark themes I'm currently using with Stylish in addition to
+Midnight Surfing Alternative:
+
+* [Amazon Dark -
+    VisualPlastik](https://userstyles.org/styles/52294/amazon-dark-visualplastik)
+* [Dark Feedly
+    (Hauschild's)](https://userstyles.org/styles/89622/dark-feedly-hauschild-s)
+* [Dark Gmail mod by
+    Karsonito](https://userstyles.org/styles/107544/dark-gmail-mod-by-karsonito)
+    (this one is a bit buggy right now, though)
+* [Dark Netflix
+    [GRiMiNTENT]](https://userstyles.org/styles/102627/dark-netflix-grimintent)
+* [dark-facebook 2 [a dark facebook
+    theme]](https://userstyles.org/styles/95359/facebook-dark-facebook-2-a-dark-facebook-theme)
+* [Forecast.io - hide
+    map](https://userstyles.org/styles/104812/forecast-io-hide-map)
+* [GitHub Dark](https://userstyles.org/styles/37035/github-dark) (this one is
+    really well done, I love it)
+* [Google Play (Music) Dark \*Updated
+    5-15\*](https://userstyles.org/styles/107643/google-play-music-dark-updated-5-15)
+* [Messenger.com Dark](https://userstyles.org/styles/112722/messenger-com-dark)
+* [Telegram web dark / custom
+    color](https://userstyles.org/styles/109612/telegram-web-dark-custom-color)
+* [Youtube - Lights Out - A Dark Youtube
+    Theme](https://userstyles.org/styles/92164/youtube-lights-out-a-dark-youtube-theme)
+
+####UI Themes
+
+Most of my firefox UI is styled dark with the [FT
+DeepDark](https://addons.mozilla.org/en-US/firefox/addon/ft-deepdark/) theme.
+
+The firefox developer tools can be [themed dark in its
+settings](http://soledadpenades.com/2014/11/20/using-the-firefox-developer-edition-dark-theme-with-nightly/).
+
+####Addons
+
+For reddit, I use the [RES](http://redditenhancementsuite.com/) addon which has
+a night mode option.
+
+I also use [Custom New
+Tab](https://addons.mozilla.org/en-US/firefox/addon/custom-new-tab/) combined
+with [homepage.py](https://github.com/ok100/homepage.py) to display a list of my
+favorite websites when I start a new tab.
+
+[Vimperator](https://addons.mozilla.org/en-US/firefox/addon/vimperator/) allows
+me to control firefox completely with my keyboard which is really useful when I
+am switching back and forth between firefox and vim. By default, the vimperator
+window has a white background, so I had to [set it to a dark
+theme](https://github.com/vimpr/vimperator-colors). Also, in order to make all
+of the vimperator help pages dark, I had to add the protocol `liberator://` to
+the regex for Midnight Surfing Alternative (exact syntax for that above).
+
+###Redshift###
+
+At night, it's also useful to filter out blue light to help with sleep.
+[Redshift](http://jonls.dk/redshift/) is a utility that does this automatically
+while running in the background.
+
+![Midnight in action with redshift](/assets/midnight_screenshot_redshift.png)
+
+###Invert it all!###
+
+I noticed that with the dark colors and my monitor brightness turned low, it was
+hard to see the screen during the day because of glares. An easy solution to
+this is to simply invert the colors on the output of the monitor into an instant
+day theme.
+
+I would have used the command `xcalib -a -i` but that would only work on one
+monitor and I have two. Luckily, someone made a utility that would invert colors
+on more than one monitor called
+[xrandr-invert-colors](https://github.com/zoltanp/xrandr-invert-colors).
+
+```bash
+#!/bin/bash
+inverted=$(xcalib -a -p | head -c 1)
+if [ "$inverted" == "W" ]
+  then
+    if [ -z "$(pgrep redshift)" ]
+      then
+        xrandr-invert-colors
+        redshift &
+    fi
+  else
+    if [ -z "$(pgrep redshift)" ]
+      then
+        xrandr-invert-colors
+      else
+        killall redshift
+        sleep 3
+        xrandr-invert-colors
+    fi
+fi
+```
+
+The only problem was that this utility seemed to interfere with redshift, so I
+made [a script that would disable redshift before
+inverting](https://github.com/thallada/dotfiles/blob/master/invert/bin/invert).
+
+And, now I have [a
+shortcut](https://github.com/thallada/dotfiles/commit/e5153a90fa7c89a0e2ca16e5943f0fa20d4a9512)
+to invert the screen.
+
+However, images and videos look pretty ugly inverted. VLC has a setting under
+Tools > Effects and Filters > Video Effects > Colors called Negate colors that
+can fix that.
+
+For firefox, I made a global userstyle to invert images and videos.
+
+```css
+@-moz-document regexp("(https?|liberator|file)://(?!([^.]+\\.)?[/:]).*"){
+  img, video, div.html5-video-container, div.player-api, span.emoji, i.emoji, span.emoticon, object[type="application/x-shockwave-flash"], embed[type="application/x-shockwave-flash"] {
+      filter: invert(100%);
+    }
+}
+```
+
+![Midnight inverted into a day theme](/assets/midnight_screenshot_inverted.png)
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