Improve text contrast

[why]
Some text is rather hard to read.

[how]
Change the color of the various bits of text.
Note that some files here are autogenerated and thus the generator needs
to be adapted.

Fixes: #1524

Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>

_includes/css/nerd-font-tweaks.scss

@@ -43,12 +43,12 @@ input.nerd-font-input {
 
 	&.tertiary {
 		background: #565346;
-		border-color: #0fbfcf;
-		color: #0fbfcf;
+		border-color: #69e8ff;
+		color: #69e8ff;
 	}
 
 	&.tertiary--inverse {
-		background: #0fbfcf;
+		background: #69e8ff;
 		border-color: #565346;
 		color: #565346;
 	}
@@ -140,7 +140,7 @@ a.nerd-font-button:before {
 #main .nerd-font-cheat-sheet .column:hover {
 	background: rgba(0, 0, 0, .25);
 	border: 2px solid #0fbfcf;
-	color: #0fbfcf !important;
+	color: #69e8ff !important;
 	cursor: pointer;
 }
 
@@ -154,7 +154,7 @@ a.nerd-font-button:before {
 }
 
 #main .nerd-font-cheat-sheet .column:hover .class-name {
-	color: #0fbfcf;
+	color: #69e8ff;
 }
 
 #main .nerd-font-cheat-sheet .column .class-name {
@@ -199,7 +199,7 @@ a.nerd-font-button:before {
 
 #main .nerd-font-cheat-sheet .nfold {
 	font-size: 3.25em;
-	color: #8810b0;
+	color: #cc63ff;
 	text-align: left;
 }
 

_posts/2017-01-04-icon-cheat-sheet.md

@@ -1,8 +1,8 @@
 ---
 title: "Cheat Sheet"
 short_title: "Icons"
-bg: gray
-color: "#0fbfcf"
+bg: '#5e574b'
+color: '#69e8ff'
 fa-icon: search
 page: cheat-sheet
 style: container

_posts/2017-01-07-release.md

@@ -1,8 +1,8 @@
 ---
 title: "Changelog"
 short_title: "Log"
-bg: '#ff8b25'
-color: white
+bg: '#ffa74e'
+color: '#000000'
 fa-icon: bullhorn
 page: releases
 style: container