Is it possible to change the title mouseover color?

Yes, in css for the single players as follows:

For the text singles then style the T_mp3j class, so drop something like this in the theme’s style.css file, eg:

.T_mp3j:hover { color:green; }

For the singles with buttons, they’re assembled a bit differently so use group_wrap class to style the title, eg:

.group_wrap:hover { color:red; }

The playlist player hover bg/text colour can bet set from admin.

Simon

EDIT: It’s better to use both classes on the singles with buttons, eg:

.group_wrap:hover, .T_mp3j:hover { color:red; }