Essy how old is your Avida? It may be a warranty claimable fix.
Normal fading or weathering of the MH usually can be brightened up with a good buffing with a protective polish (such as Meguires) - Local panel repair shop should be an affordable fix.
Note vehicles that are left out in Australian weather/sun/rain, need to be polished with quality product every 5/6 months, (otherwise paintwork will become chalky, particularly poor quality fiberglass panels).
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Possum; AKA:- Ali El-Aziz Mohamed Gundawiathan
Sent from my imperial66 typewriter using carrier pigeon, message sticks and smoke signals.
I use a Fibreglass polish called Nu Finish on my Motorhome, it is available at most Auto Parts shops. Use as per instructions and you will find that it will do the job.