Small bugfix in night.css theme

Author: sborsje

theme/night.css

@@ -13,7 +13,7 @@
 .cm-s-night span.cm-string { color: #37f14a; }
 .cm-s-night span.cm-meta { color: #7678e2; }
 .cm-s-night span.cm-variable-2, .cm-s-night span.cm-tag { color: #99b2ff; }
-.cm-s-night span.cm-variable-3, .cm-s-night span.cm-def { white; }
+.cm-s-night span.cm-variable-3, .cm-s-night span.cm-def { color: white; }
 .cm-s-night span.cm-error { color: #9d1e15; }
 .cm-s-night span.cm-bracket { color: #8da6ce; }
 .cm-s-night span.cm-comment { color: #6900a1; }