Question for RubyCarbuncle
EDIT: Okay so, I edited the particles, however how exactly do I replace them in game? I tried doing what I would normally do to change textures in the pak01_dir.vpk but that only made an error which made the whole room get filled with a ton of X patricles.
Similar to this.
Any idea why this is happening, and how I can fix it?
LOL... I DO like those red "x"s!!! They're sooo scary! Save them for a Halloween map!
useful tools and stuff here on TWP 
[spoiler]
[/spoiler]
Whoa. I want to see this!
I suppose you could use the sticky gel, since it doesn't seem to do much. Or you could hex the paint_bomb model and drop that, creating splats as in those Portal-2-in-Portal-1 maps.
Or you could try one of the buffer overflow gels, and try not to crash the game too badly. 
Wow that looks awesome! I didn't even know it was possible to do that with gels. I hope to one day see a test chamber made with that.
Congrats, you deserve this in my opinion. 
Youtube Channel My Workshop
My Maps/Projects:
[spoiler]Maps:
RBC 1 RBC 2
Blue Walls
Converting Propulsion
One Week Creation
Secondary Fire
Flings Speed Patience
Ongoing Projects:
Alive & Kicking: Chamber 18 Secondary Fire[/spoiler]
WHOA that is epic. Can a point_push really do that?!
The cube should look pretty awesome. Try using SolidEnergy shaders on part of it or something. And put a point_tesla in the middle of the cube to zap at the gel.
ahhh verry cool, I saw the same effect when I was building the pnuematic diversity vents for the PTI editor
AMAZING effect Chicken!!! 
I can only think of awesome and really funny maps with the usage of that!!
useful tools and stuff here on TWP [spoiler]
[/spoiler]
Its like a gel solar system. 
Aperture Science: We do our science asbestos we can!
I did some more experimenting with Gels, and I managed to get both silver Reflection Gel and purple Adhesion Gel and all the normal gels in the same map (in puzzle maker even) and looking right, except the Adhesion Gel only stops cubes from sliding off Propulsion Gel and it looks white/grey on surfaces even though it's purple when falling. And Reflection Gel still looks the same as Conversion Gel on surfaces.
Gels 5 and 6 need a missing material "materials/paintblob.vmt" (note: it's not in a subfolder) which should be a modified version of "materials/paintblobs/blob_surface_bounce.vmt" but with a 4x4 purple base texture with whatever name you like. Gel 1 needs "materials/paintblobs/blob_surface_stick.vmt", which should be 4x4 dark grey with the phong multiplier set to 3 instead of 2.
Including Gel 9 somewhere in the map also changes the colour of Gels 1, 5, and 6 when they hit your face or unpaintable physics objects, from using the current value of paint_speed_color to always using shiny black, while leaving speed gel still orange.
Using the ChangePaintType input on the gel sprayer to change it to Gel 1, will not change the appearance of a gel until it hits the ground. That allows you to use Gel 5 or 6 (I use 6 because it has a printable splash particle effect name) which use the purple (or whatever colour you want) Gel but still have it work like Gel 1 and not crash the game.
I've been having problems with cubes not being pickup-able or working with lasers sometimes after getting some of the new gels on them. Maybe that's because I used Gel 9, or maybe Gel 5 or 6, or maybe even Gel 1. I don't know yet.