[Plugin:My Twitter Widget] How do I change the link colors for the twitter feed

You can analyze the right CSS for it with FIREBUG.

Example from me:

*** MY TWITTER WIDGET ***/

.my_twitter_url  {
    color: #ca6eff !important;
}

.my_tw_username  {
    color: #ca6eff !important;
}

.my_twitter_tweetos  {
    color: #a882bd !important;
}