Different manufacturers have different rules. I paid the extra for a premium paint on last car, Ford . This was the extra cost above what metallics allowed on scheme where, so I paid an extra £150 for a colour i wanted.
Cars On Motability
2009 Citroen C4 Grand Picasso
2012 Vauxhall Antara
2013 Skoda Superb Estate
2016 Seat Alhambra
2020 Seat Tarraco
2021 Ford Kuga
2024 Nissan X-Trail left in Sep 25