Since everyone is asking about the legacy stuff here it is.
Mega
All the characters that have had there art changes (Caroline,Leslie,MC,Natasha,Rachel) each have zip. If you want to change the current art to the legacy version download the files labeled as legacy. After you have extracted the folders to the www/img section. If you want to change the art back then the new art is also provided. If you want to change everything then you only need to download either the modern or the legacy zip.
Also the MC and Natasha had additional art that was not present before. I tried to pick what was closest to the new art.