That sounds like a perfect mix of art and engineering—just don’t forget the FCC rules, a failsafe, and a paint‑compatibility test. I’ll design a lightweight frame, add a UV‑LED paint sprayer, and program a flight path that avoids any illegal zones. Then we can fire up the drone, watch the neon paint streak across the brick, and maybe throw a little holographic glitter on top for good measure.

Alright, patching the firmware for glitch‑shield, loading the glitter code, and calibrating the paint jets. We’ll hit the wall in full neon mode, then fade out with a hologram shimmer. Just remember: no signal interference with the subway itself, and keep the launch window short—last thing we want is a traffic jam of glowing bricks. Let's roll.