Hi I have a character I want to edit that shows too bright in all of the stages, he just seems to pop out, what do I do to fix it? As in, what specific part needs to be changed

Hi. So like most of us, I have downloaded Project M v2.5 and it is very nice. However, I would like to have the availability of using all of the characters. At first this may seem like a stupid effort, as v2.5 does not have character data for those such as meta knight or kirby, however, I do have some from earlier versions of the game that I would like to add.

What I attempted: I reverted the CSS back to my older version which had all the characters ( I got it from someone, it did have all of the characters) and added all the characters back into /fighter. but unfortunately the game froze when I went on to select the characters that were deleted, even though I added them back into /fighter. Samus was working in P:M v2.5 for some reason, but Yoshi, Meta, and Kirby did not. Is it possible to get these characters back and working again?