.severity-block   { color: red;      font-weight: bold; }
.severity-crash   { color: deeppink; font-weight: bold; }
.severity-major   { color: crimson;   }
.severity-minor   { color: sienna;    }
.severity-text    { color: black;     }
.severity-trivial { color: grey;      }
.severity-tweak   { color: steelblue; }