Painting a Garage Door

[deevee]

All, Need a little help and advice.

I have a garage with a flexible metal roller-door (Pic)



The door is coloured on one side and bare metal (aluminium?) on the other. Has anyone successfully painted (or know if it is possible to paint) this kind of roller door? If so, what kind of paint would need to be used in order for it not to crack or peel off?

Thanks for your advice!