Create your own image and Try setRouteButtonImage:forState: Assigns a button image to the specified control states.
- (void)setRouteButtonImage:(UIImage *)image forState:(UIControlState)state
Parameters
image - The image to associate with the specified states.
state - The control state with which to associate the image.
Discussion
Use this to customize the appearance of the route button when it is enabled, disabled, highlighted, and so on.
Available in iOS 6.0 and later.