Definitely.There's a thing for modifying road signs using spray paint, stickers, etc. Crossing signals would be a bit more difficult.
(
Happosai _,,,,_(O ; o)_,,,,
Tue 13 Apr 2021, 1:15,
archived)
There's loads of modified ones around Edinburgh(
Tribs 🦇 ↓ dn ʎɐʍ sᴉɥʇ ↓🦇,
Tue 13 Apr 2021, 9:18,
archived)
static.dezeen.com/uploads/2014/09/the-dancing-traffic-light_dezeen2.giffrom
www.dezeen.com/2014/09/17/interactive-dancing-traffic-lights-installation-smart-car-lisbon/