message: Replace mnemonic colors with variables
diff: display: inline-block;
  padding: 0.2em;
  margin: 0.1em 0.2em;
  - border: 1px solid #999;
  + border: 1px solid $notice-color;
  border-radius: 2px;
  span {
  padding: 0 0.2em;
  font-family: 'Roboto Mono', monospace;
  }
  +
  span:nth-child(1) {
  - color: #999;
  + color: $notice-color;
  }
  }
  }
  display: inline-block;
  padding: 0.2em;
  margin: 0.1em 0.2em;
  - border: 1px solid #999;
  + border: 1px solid $notice-color;
  border-radius: 2px;
  background: none;
  font-size: 120%;
  }
  .mnemonicError {
  - border: 1px solid red;
  + border: 1px solid $color-f-error;
  }
  .mnemonicWords {
  