Constants
UIScrollViewIndicatorStyleDefault
The default style of scroll indicator, which is black with a white border. This style is good against any content background.
UIScrollViewIndicatorStyleBlack
A style of indicator which is black and smaller than the default style. This style is good against a white content background.
UIScrollViewIndicatorStyleWhite
A style of indicator is white and smaller than the default style. This style is good against a black content background.