title: Background color in email signature on mac mail
body: <p>I'm trying to code an email signature
  An clients like thunderbird, outlook, gmail it works as intended but on mac mail there is a problem with color codes.</p>
  <p>Any <code>background-color</code> or <code>background</code> or even <code>bgcolor=&quot;&quot;</code> (6 hex, 3hex, rgb, doesn't matter) that i set is changed to some different color
  for example:<br>
  #121d52 is changed to #c2cbf7<br>
  #b8e9fd is changed to #396070</p>
  <p>How to force it to not changing this color?</p>