<h4>Красим коды в разные цвета :</h4>
<div>
  <p><span>(343)</span> 12345</p>
  <p><span>(344)</span> 12345</p>
  <p><span>(355)</span> 12345</p>
  <p><span>(365)</span> 12345</p>
  <p><span>(3333)</span> 12345</p>
  <p><span>(1232)</span> 12345</p>

</div>

div {
  padding: 16px;
  background-color: black;
}

p {
  font-size: 16px;
  color: white;
  margin:5px; 
}

$(document).ready(function() {
  var colors = {
    "(343)": "red",
    "(344)": "orange",
    "(365)": "green",
    "(3333)": "yellow",
    "(1232)": "grey"
  };

  $("span").each(function() {
    $(this).css({ color: colors[$(this).html()] || "white" });
  });
});