Comment 4 for bug 1303883

You could use "!important" to insist on the gloss values in custom.css, like this:

a.gloss, a.gloss:hover, a.gloss:link, a.gloss:visited{
    border: thin dotted green !important;
    text-decoration:none;
    color:black;
    background-color:#FFFFEE !important;
    padding-left:2px;
    padding-right:2px;
}

Does the trick for me. Presumably, you'd have to change it in clouddocs-maven-plugin. It might break something else.