Gel...From Scratch!
I can, but not at higher than 240p without it crashing. I don't know why the AVI recorder is so broken.
I would use the Shiny Gel like the purple one in "Aperture Ireland", it changed toxic water to swimable water, thi would be interesting. or like CamBen said, to walk about it, would be good, too. But i think you may should recolor it. It looks similar to water, i think.Hm... orange, Blue, Green, purple, gray... Why don't you use yellow, i think it would fit to the colors of the oter Gels^^
And it looks strange on the ground, may you could make it look like the normal gels, but this is something you should decide. iF like it so more, ts also ok 
short question:
Will Ben be able to add it to his BeeMod? that would be the greatest thing ever, because I'm not so good in hammer at the momennt. Anayway, if not, you'll be sure able to pack them with packrat, or?
I'll try that, I think it should be possible. I wonder how they changed the appearance of the water.
I have an alternate system to make it look more like existing gels, but it doesn't work if materials are set to reject decals, which for some reason almost everything in Portal 2 is. It's ridiculous.
I hope I can get it to work for the BEE2, but since it uses custom particles it can't be packed. Instead, if someone tries to play the map without the mod installed, it'll display an error message and bring up the download page (like when you choose to browse the workshop).
Ooh, cool idea. That'll be easier than changing the poison water, I'll see if I can implement it tonight. But you'll have to use a special fizzler instance with them, which I was trying to avoid.
may you could make both Gels. I would say that more Gels will bring more ideas, puzzles conzepts ando so on... Of course it is yoour work, and more gels will make more works, so that I could understand if you only add one of them and then stop making new gels (anyway I'm relly happi, you've made the glue-Gel, thats the most important for me ), but I think if we ask the community there will be some more Gel-Ideas, but like I said, your work, you should decide how much you do^^
[edit] "I hope I can get it to work for the BEE2, but since it uses custom particles it can't be packed. Instead, if someone tries to play the map without the mod installed, it'll display an error message and bring up the download page (like when you choose to browse the workshop)."
Can't you pack particles with packrat? I'm more worried about the new scripts...
Unfortunately Portal 2 doesn't read packed particles anymore. It used to. But it can read packed scripts just fine.
And I'll release this as a framework once I get it working a bit better, so anyone who wants to can build off it to add new gel types.
That would be cool, except I don't know anything about scripts. Oh well, I can leave it to the professionals. Anyway, I want to see what I can do with existing gel and change some stuff around to try and make some stuff.
Aperture Science: We do our science asbestos we can!
What exactly do the particles do?
Oh, ok. Thats a big problem, i understand... I allways thought this are VMT's, too and particles just give some special effects or something like thag. I hope there is a way to solve this.
VMTs are texture property texts. Also, gel bombs I think are prop physics set to break on impact, but the splash effect uses particles.
so, the splash-effect is missing, but the blobs itself and the Gel on walls, floor and object would be visible and work correctly? In That Case I would suggest that you don't make a map-stopping Error message for those whou haven't installed Bee2. You could pack the other things into the bsp and just making a text message at the begin of the map, that tells the player that he didn't install the Gel-Particle-Pack and that some effects are missing, but he anyway can play the map without the effects if he want^^
The original gel bombs don't use particles, but these new ones do. Particles are also used for gel moving through pipes in the original game.