Change “Detect Current Location” button color

function lpac_change_checkout_btn_color(){
  echo "
  <style>
  #lpac-find-location-btn{
    background: #008b8b;
  }
  </style>
  ";
}
add_action('wp_head', 'lpac_change_checkout_btn_color');

function lpac_change_checkout_btn_txt_color(){
  echo "
  <style>
  #lpac-find-location-btn{
    background: #008b8b;
    color: #eeff00;
  }
  </style>
  ";
}
add_action('wp_head', 'lpac_change_checkout_btn_txt_color');