Fixed the "Matt Green" color

Author: LittleJ

system/Debug/Toolbar/Views/SASS/_graphic-charter.scss

@@ -15,6 +15,6 @@ $g-red: #DD4814;
 // Matt colors
 $m-blue: #D8EAF0;
 $m-gray: #DFDFDF;
-$m-green: #5BC0DE;
+$m-green: #DFF0D8;
 $m-orange: #FDC894;
 $m-red: #EF9090;