A new way to restore smoothing capacitors

[Old Sparky]

I have seen those.
They do tend to look a little out of place in bright blue or red.
Doing them without removal from the chassis is also attractive due to a cramped layout on the top side.

I guess I approach these things from a service engineers poin of view - i.e. if a newr part, be it capacitor or anything else is/was produced, this would be used to replace the older type whenever a radio, etc., came in for service.