diff --git a/static/css/atom-one-dark-reasonable.css b/static/css/atom-one-dark-reasonable.css
new file mode 100644
index 0000000000..fd41c996a3
--- /dev/null
+++ b/static/css/atom-one-dark-reasonable.css
@@ -0,0 +1,77 @@
+/*
+
+Atom One Dark With support for ReasonML by Gidi Morris, based off work by Daniel Gamage
+
+Original One Dark Syntax theme from https://github.com/atom/one-dark-syntax
+
+*/
+.hljs {
+  display: block;
+  overflow-x: auto;
+  padding: 0.5em;
+  line-height: 1.3em;
+  color: #abb2bf;
+  background: #282c34;
+  border-radius: 5px;
+}
+.hljs-keyword, .hljs-operator {
+  color: #F92672;
+}
+.hljs-pattern-match {
+  color: #F92672;
+}
+.hljs-pattern-match .hljs-constructor {
+  color: #61aeee;
+}
+.hljs-function {
+  color: #61aeee;
+}
+.hljs-function .hljs-params {
+  color: #A6E22E;
+}
+.hljs-function .hljs-params .hljs-typing {
+  color: #FD971F;
+}
+.hljs-module-access .hljs-module {
+  color: #7e57c2;
+}
+.hljs-constructor {
+  color: #e2b93d;
+}
+.hljs-constructor .hljs-string {
+  color: #9CCC65;
+}
+.hljs-comment, .hljs-quote {
+  color: #b18eb1;
+  font-style: italic;
+}
+.hljs-doctag, .hljs-formula {
+  color: #c678dd;
+}
+.hljs-section, .hljs-name, .hljs-selector-tag, .hljs-deletion, .hljs-subst {
+  color: #e06c75;
+}
+.hljs-literal {
+  color: #56b6c2;
+}
+.hljs-string, .hljs-regexp, .hljs-addition, .hljs-attribute, .hljs-meta-string {
+  color: #98c379;
+}
+.hljs-built_in, .hljs-class .hljs-title {
+  color: #e6c07b;
+}
+.hljs-attr, .hljs-variable, .hljs-template-variable, .hljs-type, .hljs-selector-class, .hljs-selector-attr, .hljs-selector-pseudo, .hljs-number {
+  color: #d19a66;
+}
+.hljs-symbol, .hljs-bullet, .hljs-link, .hljs-meta, .hljs-selector-id, .hljs-title {
+  color: #61aeee;
+}
+.hljs-emphasis {
+  font-style: italic;
+}
+.hljs-strong {
+  font-weight: bold;
+}
+.hljs-link {
+  text-decoration: underline;
+}
diff --git a/static/css/featherlight.min.css b/static/css/featherlight.min.css
index f225bec519..058487f916 100644
--- a/static/css/featherlight.min.css
+++ b/static/css/featherlight.min.css
@@ -1,8 +1,8 @@
 /**
  * Featherlight - ultra slim jQuery lightbox
- * Version 1.2.3 - http://noelboss.github.io/featherlight/
+ * Version 1.7.13 - http://noelboss.github.io/featherlight/
  *
- * Copyright 2015, Noël Raoul Bossart (http://www.noelboss.com)
+ * Copyright 2018, Noël Raoul Bossart (http://www.noelboss.com)
  * MIT Licensed.
 **/
-@media all{.featherlight{display:none;position:fixed;top:0;right:0;bottom:0;left:0;z-index:2147483647;text-align:center;white-space:nowrap;cursor:pointer;background:#333;background:rgba(0,0,0,0)}.featherlight:last-of-type{background:rgba(0,0,0,.8)}.featherlight:before{content:'';display:inline-block;height:100%;vertical-align:middle;margin-right:-.25em}.featherlight .featherlight-content{position:relative;text-align:left;vertical-align:middle;display:inline-block;overflow:auto;padding:25px 25px 0;border-bottom:25px solid transparent;min-width:30%;margin-left:5%;margin-right:5%;max-height:95%;background:#fff;cursor:auto;white-space:normal}.featherlight .featherlight-inner{display:block}.featherlight .featherlight-close-icon{position:absolute;z-index:9999;top:0;right:0;line-height:25px;width:25px;cursor:pointer;text-align:center;font:Arial,sans-serif;background:#fff;background:rgba(255,255,255,.3);color:#000}.featherlight .featherlight-image{width:100%}.featherlight-iframe .featherlight-content{border-bottom:0;padding:0}.featherlight iframe{border:0}}@media only screen and (max-width:1024px){.featherlight .featherlight-content{margin-left:10px;margin-right:10px;max-height:98%;padding:10px 10px 0;border-bottom:10px solid transparent}}
\ No newline at end of file
+html.with-featherlight{overflow:hidden}.featherlight{display:none;position:fixed;top:0;right:0;bottom:0;left:0;z-index:2147483647;text-align:center;white-space:nowrap;cursor:pointer;background:#333;background:rgba(0,0,0,0)}.featherlight:last-of-type{background:rgba(0,0,0,.8)}.featherlight:before{content:'';display:inline-block;height:100%;vertical-align:middle}.featherlight .featherlight-content{position:relative;text-align:left;vertical-align:middle;display:inline-block;overflow:auto;padding:25px 25px 0;border-bottom:25px solid transparent;margin-left:5%;margin-right:5%;max-height:95%;background:#fff;cursor:auto;white-space:normal}.featherlight .featherlight-inner{display:block}.featherlight link.featherlight-inner,.featherlight script.featherlight-inner,.featherlight style.featherlight-inner{display:none}.featherlight .featherlight-close-icon{position:absolute;z-index:9999;top:0;right:0;line-height:25px;width:25px;cursor:pointer;text-align:center;font-family:Arial,sans-serif;background:#fff;background:rgba(255,255,255,.3);color:#000;border:0;padding:0}.featherlight .featherlight-close-icon::-moz-focus-inner{border:0;padding:0}.featherlight .featherlight-image{width:100%}.featherlight-iframe .featherlight-content{border-bottom:0;padding:0;-webkit-overflow-scrolling:touch}.featherlight iframe{border:0}.featherlight *{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box}@media only screen and (max-width:1024px){.featherlight .featherlight-content{margin-left:0;margin-right:0;max-height:98%;padding:10px 10px 0;border-bottom:10px solid transparent}}@media print{html.with-featherlight>*>:not(.featherlight){display:none}}
\ No newline at end of file
diff --git a/static/css/theme.css b/static/css/theme.css
index 924148d783..2e1f65ef3c 100644
--- a/static/css/theme.css
+++ b/static/css/theme.css
@@ -646,7 +646,7 @@ code + .copy-to-clipboard {
 pre {
     padding: 1rem;
     margin: 2rem 0;
-    background: #1d1f21;
+    background: #282c34;
     border: 0;
     border-radius: 2px;
     line-height: 1.15;
@@ -1078,7 +1078,7 @@ pre .copy-to-clipboard {
     position: absolute;
     right: 4px;
     top: 4px;
-    background-color: #4d5257;
+    background-color: #949bab;
     color: #ccc;
     border-radius: 2px;
 }