Is there a way to replace all of a certain color around an irregular object in an image obtained from a screenshot?
For example, suppose you have the following image which was obtained using the Snipping Tool in Windows 7. And suppose you want to change the red background to some other color. How would you go about doing that?
Note that the red background in this image is not homogenous or uniform throughout. Instead (and I hope you can see this) it's sort of blotchy or smudged and therefore cannot all be defined by a single RGB combination.
FYI, I'm running Windows 7 and I have PowerPoint 2013 and of course, MS Paint but I don't have Photoshop or any similar application.