Turn ccNewsletter buttons grey.css

.chillcreations-bootstrap .btn-warning, 
.chillcreations-bootstrap .btn-warning:active,
.chillcreations-bootstrap .btn-warning:hover,
.chillcreations-bootstrap .btn-warning:visited,
.chillcreations-bootstrap .btn-warning:focus,
.chillcreations-bootstrap .btn-success,
.chillcreations-bootstrap .btn-success:active,
.chillcreations-bootstrap .btn-success:hover,
.chillcreations-bootstrap .btn-success:visited,
.chillcreations-bootstrap .btn-success:focus,
.chillcreations-bootstrap .btn-primary,
.chillcreations-bootstrap .btn-primary:active,
.chillcreations-bootstrap .btn-primary:hover,
.chillcreations-bootstrap .btn-primary:visited,
.chillcreations-bootstrap .btn-primary:focus
{
  color: #fff;
  text-shadow: 0 -1px 0 rgba(0,0,0,0.25);
  background-color: #868d86;
  background-image: -moz-linear-gradient(top,#868d86,#868d86);
  background-image: -webkit-gradient(linear,0 0,0 100%,from(#868d86),to(#868d86));
  background-image: -webkit-linear-gradient(top,#868d86,#868d86);
  background-image: -o-linear-gradient(top,#868d86,#868d86);
  background-image: linear-gradient(to bottom,#868D89,#868d86);
  border-color: #868d86 #868d86 #868d86;
  border-color: rgba(0,0,0,0.1) rgba(0,0,0,0.1) rgba(0,0,0,0.25);
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#868d86',endColorstr='#868d86',GradientType=0);
  filter: progid:DXImageTransform.Microsoft.gradient(enabled=false);
  outline:0 !important;
}