Grid Toolbar Paging Icons

Take a look at the attached image. The two icons on the right (pages and rows per page) always are the same gray color no matter what. So they are hard to see with some of our other themes. I’d rather them be a font awesome icon so they would appear to be black. Is this possible? Thanks!

“grey-out” icons are for the disabled state.
Please, refer to the following sample: … ng_wt.html
Unfortunately it is not available to use the font-awesome icons for the paging toolbar.