I have some thoughts and some issues
I do not know G-code well but I do know how to leverage the internet to fill gaps but I am still having issues/ complaints
Tip shaping- I get that this is hard to have a one size fits all since the large amounts of printers and setups but this site needs to have more comprehensive page devoted to it since it can cause failure to load and clogs and jams. The time it takes to try a new setting, then on a fail having to reset the printer clean the build plate and reposition the filament is exceedingly time consuming.
PTFE tube- Since I have done a lot of resetting the machine and 3d chameleon a Major annoyance is the NON-clear PTFE tube. From a trouble shooting standpoint that foggy stuff is annoying.
General lack of details- This site is generally lacking in any form of actual help. We get basic theory on operation and a few videos from Bill that show decent operation of things but no details. Chris's Basement video series is THE starting point with this setup and really not much else.
All in all it is an amazing solution to a problem and I don't want my complaining to downplay the innovation that is the 3D Chameleon but the site needs to do a bit better and smoothing out the bumps.
My setup: Ender 3 MB: BTT E3 SKR MINI V3
Extruder: Sprite Extruder
I ended up with tip shaping that is completely different and it finally got mine working. Ended up with 20 second color changes and no clogging jams or chewed up filament
Instead of cooling and shaping the filament tip I just extrude the molten filament and pull it back. Only the very tip (~1mm) will be molten and it makes a perfect sharp tip as it's pulled back and cools in the time it takes to come out.
I found this more quickly by just running the tip shaping code from a console, by itself.
Mine ended up like this. Give it a shot, it should be near universal
G0 E10 F500; push out the molten filament G0 E-15 F4000; quickly retract G0 E-10 F150; slowly retract G0 E-60 F4000; quickly retract