Can't Change any colors in BuddyPress Social

Help,

I can't seem to change any of the color settings in buddy press social ...

I have tried playing with

bp-global-adminbar-css.php

I have tried to put this into my mu-plugins ... (the install is on a subdomain (members.mydomain.com) so the root is not standard .. in my calse the directory is ...

/MYSUBDIRECTORY/public_html/wp-content/mu-plugins

I have tried changing the the permissions on the global-admin and clearing cache ... still no luck ... any ideas appreciated

I can change the text on the non-login page and add logos, etc so I know that the changes are taking hold somewhere but the colors don't work at all ...