I was looking at the Fighter's Dressing Room spreadsheet and I saw an inverted Mario from some GameCube test disc. I was kind of surprised to find out nobody's made this yet, so I decided to myself. I thought it was going to be incredibly easy, but... it wasn't.
It turns out I had to make Mario more accurate to his N64 colors (as that was what was used) before inverting the colors. I decided to include that just if anybody wanted it.
1 (c00) - Inverted
2 (c01) - N64
They automatically come in those slots, but you can change the file names to match whatever slot you want them to be on. If you don't know how to make extra slots, visit this link: https://bit.ly/2LQD9qQ
Everything is where they need to be, so no worrying about extra stuff.