Is it possible to define custom colours for the MKPinAnnotationView colour rather than the default red, green or purple? Docs say no...
If you want to use annotation with color different from standard ones you should create your own image. <br /> If Apple's docs say no, you should trust them - even if there's undocumented (using private api) way to do something it will likely cause your app to be rejected from app store.Answer2:
Yep. It is possible and doesn't involve any undocumented APIs:
<a href="https://stackoverflow.com/questions/1185611/mkpinannotationview-are-there-more-than-three-colors-available" rel="nofollow">MKPinAnnotationView: Are there more than three colors available?</a>