No, but some do select the text as it is being read to provide contrast.

I'll bet this this screws up screen readers.

It gets worse. During an administrative furlough employees are not permitted to use earned paid leave, or to volunteer his or her services to his or her agency. Even Family and Medical Leave must be taken as Leave Without Pay. Any outside work is always restricted due to various federal ethics rules. Source: http://www.opm.gov/policy-data-oversight/pay-leave/furlough-guidance/supplemental-guidance-administrative-furloughs.pdf