a, button[type=submit].link {
  color: grey;
}

button[type=submit] {
  background: #99cc00;
}
button[type=submit].link {
  background: transparent;
}

input[type=checkbox]:not(.menu-btn):checked + label > span:before {
  color: #99cc00;
}

input[type=radio]:checked + label > span > span {
  background-image: -webkit-gradient(linear, left top, left bottom, from(rgb(197.625, 255, 25.5)), to(#99cc00));
  background-image: linear-gradient(rgb(197.625, 255, 25.5), #99cc00);
}

button[type=submit] {
  background: #99cc00;
}