Dark theme accessibility (#4069)

* Add --code-color variable for <code> elements

* Copy dark theme code color from newsletter theme

Author: robbystk

themes/rusted/static/css/_base.scss

@@ -140,6 +140,7 @@ code {
 
 code {
     padding: 1px 5px;
+    color: $code-color;
 }
 
 pre {

themes/rusted/static/css/main.scss

@@ -16,6 +16,7 @@ $background-color:      var(--background-color);
 $brand-color:           var(--brand-color);
 $brand-color-visited:   var(--brand-color-visited);
 $pre-color:             var(--pre-color);
+$code-color:            var(--code-color);
 $code-bg-color:         var(--code-bg-color);
 $code-border-color:     var(--code-border-color);
 $thead-color:           var(--thead-color);
@@ -32,6 +33,7 @@ $brand-color-lt:         #2a7ae2;
 $brand-color-visited-lt: #551A8B;
 $pre-color-lt:           #333;
 $code-bg-color-lt:       #eef;
+$code-color-lt:          #c7254e;
 $thead-color-lt:         #eeeeee;
 $table-lines-color-lt:   #d2d2d2;
 $table-even-color-lt:    #f7f7f7;
@@ -43,6 +45,7 @@ $brand-color-dt:         #d2991d;
 $brand-color-visited-dt: #9a7015;
 $pre-color-dt:           #aeaeae;
 $code-bg-color-dt:       #2a2a2a;
+$code-color-dt:          #eb7f98;
 $thead-color-dt:         #525252;
 $table-lines-color-dt:   #aeaeae;
 $table-even-color-dt:    #828282;
@@ -53,6 +56,7 @@ $table-even-color-dt:    #828282;
     --brand-color:          #{$brand-color-lt};
     --brand-color-visited:  #{$brand-color-visited-lt};
     --pre-color:            #{$pre-color-lt};
+    --code-color:           #{$code-color-lt};
     --code-bg-color:        #{$code-bg-color-lt};
     --code-border-color:    #{$grey-colour-light};
     --thead-color:          #{$thead-color-lt};
@@ -67,6 +71,7 @@ $table-even-color-dt:    #828282;
         --brand-color:          #{$brand-color-dt};
         --brand-color-visited:  #{$brand-color-visited-dt};
         --pre-color:            #{$pre-color-dt};
+        --code-color:           #{$code-color-dt};
         --code-bg-color:        #{$code-bg-color-dt};
         --code-border-color:    #{$code-bg-color-dt};
         --thead-color:          #{$thead-color-dt};