Ive also fixed a couple of green terminals in the white connectors causing issues before.
Ive noted on the clios that the engine bay fusebox cover is a s**t fit and can allow water in especially if the car is stood for periods of time without use. The one i fixed had water tracking down the spade terminals for the small relays for immob, engine loom power causing the wiring to go corroded and bad 4" into the loom. Id say if relay terminals are going green then its the start of the issue, get the contacts cleaned up and covered in silicone grease to try and slow it down.
I might look into making up a few reconditioned engine looms in the new year to help people out with these issues, new terminals and wiring where needed, re wrapped etc.