title: How can I change the hue of a certain area with OpenCV-Python
body: <p>i want to edit the hsv value of a certain area
  <a href="https://i.stack.imgur.com/pOkyo.png" rel="nofollow noreferrer">The picture I want to change color of</a></p>
  <p>I to change all the purple parts of the image to green. Here is the result I made in an image editing software just to show a example.<a href="https://i.stack.imgur.com/EgBSX.png" rel="nofollow noreferrer">The Result</a>
  Yeah i made it darker for no reason but i just wanna make the blade green but not the handle</p>