title: How do I draw a monochrome PDF with a tint color and opacity on iOS?
body: <p>I need to draw a monochrome PDF in an iOS app, but replacing the color in the PDF with another color, and applying an opacity value. I'd like to show the result in a UIImageView or UIView.</p>
  
  <p>I can draw the PDF using Quartz functions, but it is drawn black (the color of the original PDF). What would be the best way to do this?</p>