[lesser-dark theme] Make attributes readable

Author: alur

theme/lesser-dark.css

@@ -38,7 +38,7 @@ Ported to CodeMirror by Peter Kroon
 .cm-s-lesser-dark span.cm-builtin { color: #ff9e59; }
 .cm-s-lesser-dark span.cm-bracket { color: #EBEFE7; }
 .cm-s-lesser-dark span.cm-tag { color: #669199; }
-.cm-s-lesser-dark span.cm-attribute { color: #00c; }
+.cm-s-lesser-dark span.cm-attribute { color: #81a4d5; }
 .cm-s-lesser-dark span.cm-hr { color: #999; }
 .cm-s-lesser-dark span.cm-link { color: #00c; }
 .cm-s-lesser-dark span.cm-error { color: #9d1e15; }