dev/scss/main/alertify/alertify-default.scss

/**
 * Default Look and Feel
 */
.alertify,
.alertify-log {
  font-family: sans-serif;
}
.alertify {
  background: #FFF;
  border: 10px solid #333; /* browsers that don't support rgba */
  border: 10px solid rgba(0,0,0,.7);
  border-radius: 8px;
  box-shadow: 0 3px 3px rgba(0,0,0,.3);
  -webkit-background-clip: padding;     /* Safari 4? Chrome 6? */
  -moz-background-clip: padding;     /* Firefox 3.6 */
  background-clip: padding-box; /* Firefox 4, Safari 5, Opera 10, IE 9 */
}
.alertify-text {
  border: 1px solid #CCC;
  padding: 10px;
  border-radius: 4px;
}
.alertify-button {
  border-radius: 4px;
  color: #FFF;
  font-weight: bold;
  padding: 6px 15px;
  text-decoration: none;
  text-shadow: 1px 1px 0 rgba(0,0,0,.5);
  box-shadow: inset 0 1px 0 0 rgba(255,255,255,.5);
  background-image: -webkit-linear-gradient(top, rgba(255,255,255,.3), rgba(255,255,255,0));
  background-image:    -moz-linear-gradient(top, rgba(255,255,255,.3), rgba(255,255,255,0));
  background-image:     -ms-linear-gradient(top, rgba(255,255,255,.3), rgba(255,255,255,0));
  background-image:      -o-linear-gradient(top, rgba(255,255,255,.3), rgba(255,255,255,0));
  background-image:         linear-gradient(top, rgba(255,255,255,.3), rgba(255,255,255,0));
}
.alertify-button:hover,
.alertify-button:focus {
  outline: none;
  background-image: -webkit-linear-gradient(top, rgba(0,0,0,.1), rgba(0,0,0,0));
  background-image:    -moz-linear-gradient(top, rgba(0,0,0,.1), rgba(0,0,0,0));
  background-image:     -ms-linear-gradient(top, rgba(0,0,0,.1), rgba(0,0,0,0));
  background-image:      -o-linear-gradient(top, rgba(0,0,0,.1), rgba(0,0,0,0));
  background-image:         linear-gradient(top, rgba(0,0,0,.1), rgba(0,0,0,0));
}
.alertify-button:focus {
  box-shadow: 0 0 15px #2B72D5;
}
.alertify-button:active {
  position: relative;
  box-shadow: inset 0 2px 4px rgba(0,0,0,.15), 0 1px 2px rgba(0,0,0,.05);
}
.alertify-button-cancel,
.alertify-button-cancel:hover,
.alertify-button-cancel:focus {
  background-color: #FE1A00;
  border: 1px solid #D83526;
}
.alertify-button-ok,
.alertify-button-ok:hover,
.alertify-button-ok:focus {
  background-color: #5CB811;
  border: 1px solid #3B7808;
}

.alertify-log {
  background: #1F1F1F;
//  background: rgba(0,0,0,.9);
  background: rgb(0,0,0);
  padding: 15px;
  border-radius: 4px;
  color: #FFF;
  // text-shadow: -1px -1px 0 rgba(0,0,0,.5);
}
.alertify-log-error {
  background: #FE1A00;
  //  background: rgba(254,26,0,.9);
    background: rgb(254,26,0);
}
.alertify-log-success {
  background: #5CB811;
//  background: rgba(92,184,17,.9);
  background: rgb(92,184,17);
}