.btn-link in .navbar-inverse is not white

Created by: Wolfr

http://jsfiddle.net/QArP2/

Since there are the defaults for navbar-inverse are these one would expect the .btn-link to be $gray-light (the code works for regular links but not for .btn-links).

$navbar-inverse-link-color:                 $gray-light !default;
$navbar-inverse-link-hover-color:           #fff !default;
$navbar-inverse-link-hover-bg:              transparent !default;