From the help file (under /help Control Codes) it says
You can use color 99 to indicate a transparent color
I have tried to get an idea as to what this would look like, but when I try it, either it's not working, or it's returning the same thing as the default settings.
Can someone give me an example of how this should look, since (in theory) transparent shouldn't be the same as the default.
Any further help/clarification on this matter is welcomed.