#mc_embed_signup input.mce_inline_error {
 border-color:#6B0505;
}
#mc_embed_signup div.mce_inline_error {
 margin: 0 0 1em 0;
 padding: 5px 10px;
 background-color:#6B0505;
 font-weight: bold;
 z-index: 1;
 color:#fff;
}