Highlight cell upon selection

Hello,

I would like a cell's fill colour to change upon selection. E.g., Clicking on the cell makes it grey. Clicking on it a second time makes it white again. (i.e., click cell, if current fill is white, set fill to grey, else set to fill to white).

I'd really appreciate your help. Thanks.

Alternatively, if I were to mask the cell as a toggle button, where selecting the cell (i.e., button) would make it a default BackColor when the value is true, then that might be another option...