Most likely it is a GFCI outlet which esssentially means the circut has been blown at the outlet. This usually happens if a drop of water or a hard bump occured within the circuit. If this is the case ... read more
Hello Linda,
Typically, you do not want to cover existing grout. You will need to remove the old grout and apply your new colored grout. A tile contractor can help you with this project. Please let ... read more