Those aren't part of the footer.
You will still need to do manual edits for those.
If you apply the changes to EXTRA.css then they will continue to work after upgrading.
Code:
/* Change colour of the copyright text */
#copyright {
color: @dimmedTextColor !important;
}
/* Change colour of Terms and Rules */
#legal a:link, #legal a:visited {
color: @dimmedTextColor !important;
}