Paul Strauch's doorbell ringers are flat plates with a raised textural design and a visible illuminated doorbell button.
To install them you should already have a working wired doorbell ringer. You just take the wires off your present button and switch them over onto this one. The ring surrounding the button lights up. The back of the button does stick out slightly behind the mounting plate, so you may need to slightly enlarge the hole where your wires come out.