Stevie Ray Vaughan had a Strat with only one pickup in the neck position. He named it "Butter" and/or "Yellow" based on its color. It was stolen in '87 and never recovered, and when he had it he didn't use it very often so it's one of his lesser-known Strats.
In this pic of him playing it the finish looks like sparkle/metalflake, but that's just film grain:
It might be a bit cliche to put your initials on it, but that big empty space under the strings is a great place to put a sticker or decal.
Have you already got the custom pickguard and done the mod, or is the pic you linked just a mock-up of what it'll look like?
The cheap and easy way to do what you want is to use the stock guard, leave the 3 pickups in place, remove the switch and two of the pots and just connect the neck pickup. Hardware stores sell "panel plugs" to fill the two empty pot holes (round, slightly domed plugs that just clip into place). With the empty switch slot and the plugs it won't look quite as clean as a custom pickguard, but with the two inactive pickups in place it won't look quite as weird.
If you haven't already paid to have a custom pickguard made, I'd definitely try that approach to see if a 1 pickup Strat will be as satisfying as you hope it will be.