not too bright (my corneas cried for help) not too dark (#358)

github-dark.css

@@ -1531,7 +1531,7 @@
   .home-hero-signup .text-white, a.filter-item.selected, .date-selector td.selected,
   .date-selector td.selectable-day:hover, .subnav-item:hover, .subnav-item:focus,
   .owner-select-target:hover, .owner-select-target:focus {
-    color: #fff !important;
+    color: #efefef !important;
   }
   .btn, a.btn, .btn.btn-primary, .button.primary,
   .minibutton.primary, .btn-danger:hover, ul.repo-stats li a:hover,
@@ -1620,10 +1620,10 @@
   .leaflet-control-attribution, .leaflet-control-attribution a,
   .integrations-breadcrumb-link, a.integrations-breadcrumb-link,
   .ace_button, .link-gray-dark, a.link-gray-dark {
-    color: #f5f5f5 !important;
+    color: #e2e2e2 !important;
   }
   b, strong, .explain strong {
-    color: #fafafa !important;
+    color: #e2e2e2 !important;
   }
   pre, body, h1, h2, h3, h4, h5, h1 strong, h2 strong, h3 strong,
   h4 strong, h5 strong, a.social-count, span.social-count,
@@ -1697,7 +1697,7 @@
   .Box-body-row--highlight .Box-row-link, .text-pending, a.text-pending,
   .compare-pr-placeholder p, .compare-pr-placeholder .help-link,
   .text-pending strong, #message.good, #message.major {
-    color: #d5d5d5 !important;
+    color: #c0c0c0 !important;
   }
   button, .edit-repository-meta, .field label, .boxed-group-list li, .capped-box,
   .marketing-nav a, .repository-meta,
@@ -1756,7 +1756,7 @@
   button.tabnav-tab, .rss-subscribe, a.rss-subscribe, table.capped-list .octicon,
   .site-header-menu .nav-item, .discussion-item-icon, .exploregrid-item,
   a.exploregrid-item, .commit-ref .user, .markdown-body blockquote strong {
-    color: #b5b5b5 !important;
+    color: #e2e2e2 !important;
   }
   h6, #contributions-calendar .contrib-details div,
   .tabnav-tabs a, .time, .gist-item .metadata .datetime, .list-group-item-meta,