title: Android monkeyrunner - check if screen contains an image or specific color
body: <p>I have an android app which I wanted to automate/stress-test.
  I made image-based automation script in SCAR Divi 
  and run it against my app installed on Bluestacks.
  I want to change it to Genymotion, because Bluestacks is too slow.</p>
  
  <p>I already have the environment set up 
  (genymotion+image with my app +adb installed and working).
  I rewrited my script in python and used it in MonkeyRunner, but...</p>
  
  <p>Besides sending gestures, clicks and waits, 
  I am missing the image recognition functionality.
  I found out that I can compare 2 screen shots with ImageMagic, but that's not what I need.</p>
  
  <p>I need to check whether a certain button, or at least if a specific color is on the screen.
  Anyone could point me into right direction with this?</p>
  
  <p>I'd be really grateful for some examples :(</p>