It takes A LOT of work to make a texture hack, and you're asking for too much. Think of it like this. You want inverse colors for every character, every kart to be red, and every bike to be black. Math time!
Characters = 24
amount of bikes = 18 (I think)
amount of karts = 18 (I think)
18 + 18 + 24 = 60
Character Textures = 60
This is not counting the multiple textures for characters (ie eyes for Mario, Luigi, etc.)
You also want inverse colors for every track.
amount of tracks = 32
There's a large amount of textures to edit for each course and I'm not going to take the time to count them, so let's just say 20 textures each (even though there's probably a lot more).
32 x 20 = 640
Course textures = approx. 640
640 course textures + 60 character textures = 700
Final Answer = approx. 700
So, in conclusion, you have just requested someone to edit 700 different textures to a certain way. So, when you said:
Is Anyone Gonna Reply To This?
This is why no one is replying. Sorry if I sounded too harsh.