do they do a pure white mini? i think it may look good. I remember seeing plenty in Old English colour.
One option rather than expensive and sometimes poor resprays to buy another colour you also like and then vinyl rap it (can always be removed), heres one on Detailing World turning an M3 White.
My black M3 wrapped in white vinyl - Detailing World
This Leon shows how its done
Its a wrap! - Detailing World