+.glyphs small.digraph {
+ background: #600;
+ color: #AAA;
+ opacity: 1;
+}
+.glyphs small.value {
+ background: #600;
+ color: #AAA;
+ opacity: 1;
+}
+
+/* implementation-based alternatives */
+td.di-b {background: #000; color: #DD6} /* bmp */
+td.di-d {background: #000; color: #CCC} /* rfc-1345 digraph */
+td.di-prop {background: #000; color: #CA8} /* proposed digraph */
+td.di-a {background: #000; color: #8BC} /* ascii */
+td.di-rare {background: #333} /* disfavoured */
+td.di-invalid {background: #200} /* impossible */
+