(If available, the original camera negatives/prepped for telecine/developed film will be digitally scanned in 4K. If optional, a wet gate scan will occur.)
and how are you gonna get that?
It would be up to the support of the fans, the producers (especially Klasky-Csupo producing most of the cel animated episodes).
No one knows where the negatives are archived/kept. ViacomCBS still own the master tapes, but as Rugrats for example appears on CBS All Access, many of the episodes still yet to recieve color correction as it appears washed out due to a recent scan/how it was transferred on to videotape.