I've changed mine for one with a level sensor on it. You have to remove the bumper to change it, although you can access the pump by the wheel arch.
For reference, my new bottle (from a scrappy) had a headlight washer pump and was still white. It was also slightly larger in volume than the standard bottle that came on my highline.
OP - Start by pulling back the wheel arch and taking a look. The chances are the pump has dislodged and has come out causing a leak.