In the not-inconsiderable lifetime of this conversion it's had more than one person try to finish it and fail. I'm kind of sick of waiting and I doubt I'll do much more with it myself, so here it is; hopefully the community is less lazy than I am.

Image
Original BMP with palette
Mask

Things to do:
- Fix the colors and make a proper JJ2 palette with red water, textured background, maybe some palette objects (pinball flippers and 500 bumpers would be nice)
- Clean up the reflective purple goo tiles and pipe tiles
- Get the last frame of that 7-frame red light animation at the bottom, if there is a last frame
- Make the layout suck less
- Add extra tiles

What's in it for you? You get a Technoir conversion, you get a Technoir conversion the way you want it, you get a Technoir conversion with your name in the mask messages, you get to have a hand in deciding which tileset to do next in Let's Make a Conversion (it doesn't even have to be a JJ1 tileset).