A drop of Elmers shool glue was placed at strategic motion points to secure the wire from moving around. The glue is shown here while still wet so you can see the contrast of it drying quite clear. School glue is reasonably strong yet will come right off with a fingernail if / when needed.
The glue is tacked but not completly dry. The white marks at the glue points are the camera's flash, as seen along the wire too.
Back together. Again the camera flash is hilighting the wire as it is the reflection of the vibrato arm in the guitar body.
A look at the backside. I might darken that wire just a tad bit more if I have the time to do so. If not, then a childrens set of water colors will provide colors easy to mix and match on a pallet and apply a very conservative watered down thin coat to tint the wire, ....now that the process is known to be so easy. The existing colors will show right through the kids colors watered down thin to a tint. You can even simply put masking tape closely on both sides of the wire (rathyer than a backing mask) since the kid's watered down water colors won't do a bit of harm if it runs up under the wires. While the tape is still on the water color should be top coated with a watered-down thin coat of kid's Elmer's glue to seal the water color from hand sweat and mositure. And of course this is if you want the wire to become even more un-noticeable. It's quite close already but the camera is much more discerning of color variances than our eyes are, because the camera doesn't see as many colors as our eyes can so the camera simply grabs the next closest color.
This is the effect the camouflaged wire WILL afford. You'd have to be looking / inspecting darn close to even notice it.