We use a very short section of fuel hose (new) over toggle switches to identify the switch in the dark.

We tie a Turks Head knot onto the "Rudder Amidships Spoke" on a ship's wheel to know the rudder is amidships, by feel, when it is upright, in the dark. This also lets us know what angle we've put on the rudder by how much the knot is to the left or right of the vertical position.

The velcro patches sound good to me.