diff --git a/assets/css/theme/emacs-strict.css b/assets/css/theme/emacs-strict.css
index bd2eaf0..7ea89af 100644
--- a/assets/css/theme/emacs-strict.css
+++ b/assets/css/theme/emacs-strict.css
@@ -1,12 +1,12 @@
 .cm-s-emacs-strict {
 	font-family: monospace;
-	background: #000000EB;
+	background: #000000;
 	color: #D3D3D3;
 }
 .cm-s-emacs-strict .CodeMirror-gutters {
 	box-shadow: 1px 0 2px 0 rgba(0, 0, 0, 0.5);
 	-webkit-box-shadow: 1px 0 2px 0 rgba(0, 0, 0, 0.5);
-	background-color: #000000EB;
+	background-color: #000000;
 	z-index: 3;
 	border: none;
 }
diff --git a/assets/css/theme/iplastic.css b/assets/css/theme/iplastic.css
index 147999a..8d6ccf1 100644
--- a/assets/css/theme/iplastic.css
+++ b/assets/css/theme/iplastic.css
@@ -1,12 +1,12 @@
 .cm-s-iplastic {
 	font-family: monospace;
-	background: #EEEEEEEB;
+	background: #EEEEEE;
 	color: #000000;
 }
 .cm-s-iplastic .CodeMirror-gutters {
 	box-shadow: 1px 0 2px 0 rgba(0, 0, 0, 0.5);
 	-webkit-box-shadow: 1px 0 2px 0 rgba(0, 0, 0, 0.5);
-	background-color: #EEEEEEEB;
+	background-color: #EEEEEE;
 	z-index: 3;
 	border: none;
 }
diff --git a/assets/css/theme/made-of-code.css b/assets/css/theme/made-of-code.css
index 208e167..d5e97ca 100644
--- a/assets/css/theme/made-of-code.css
+++ b/assets/css/theme/made-of-code.css
@@ -1,12 +1,12 @@
 .cm-s-made-of-code {
 	font-family: monospace;
-	background: #090916F2;
+	background: #090916;
 	color: #F8F8F8;
 }
 .cm-s-made-of-code .CodeMirror-gutters {
 	box-shadow: 1px 0 2px 0 rgba(0, 0, 0, 0.5);
 	-webkit-box-shadow: 1px 0 2px 0 rgba(0, 0, 0, 0.5);
-	background-color: #090916F2;
+	background-color: #090916;
 	z-index: 3;
 	border: none;
 }