you can change that in bootstrap.css
.btn-danger {
color: #fff;
background-color: #d9534f; <<<change this to color number that suits you
border-color: #fafafa; >>> don't forget to change border color with some that will match it nicely.
}
.btn-danger {
color: #fff;
background-color: #d9534f; <<<change this to color number that suits you
border-color: #fafafa; >>> don't forget to change border color with some that will match it nicely.
}