Strange level, strange questions
 

So I found this level on Graal2001, it's the Bomy Gang meeting room containing the Bomy Gang tag helper and things as such. I had never seen this level before today.
I'm not certain who is the creator of this level, but I am certain that Stefan Knorr probably knows what I'm talking about.
What appears to be going on is that someone used a script to invert the colors of pics1.png to look super freaking sweet. Reminds me of Moonside (if you've played Earthbound).

Only thing is, I can't find a script anywhere in the level that is responsible for this! Could the script be only accessible by opening the level in .txt?
Would anyone like to try and figure this out for me?
Is the editor just glitching out?

Also, does this belong in a different forum?

setbackpal

obviously a bomy conspiracy aimed to shutdown g2k1 forever following antago's mental breakdown resulting in changes to your most dear bread graphic

Do people still use this? I thought it had to do with lighting but then again someone set you use seteffect for that now.. I don't know D:

Or is it only GS1?

The setbackpal would create the desired effect if the tileset was the actual pics1.png.

Oh I see.. it sounded all the rage in the past, and I've never heard of it since Shaded Legends/Babylon.. I'll have to test it out.. :3