FLStudio 20.6 onwards:
From 20.6 onwards there is a dedicated button to resetting any grid colour to its default. It is a little D at the bottom left of the recolouring menu that will automatically allow you to reset ...
other snap modes. Generally it's best to use FLStudio with snap enabled, 'line' is a good setting. Note: You can temporarily disable snap to (none) by holding the Alt key on your keyboard. The FLStudio Support Team. ...