Achroma Released for Image Color Removal
There are complex image editing applications that are capable of just about anything, if you have the time and know how to use them. And then there are inexpensive, simple little applications that do just one thing. In the latter category you'll find Achroma, a new Mac program from developer einstein's legacy, known for such programs as Deframe and LightTable.
Achroma is designed to do one thing — quickly remove colors from an image. That's it! The fastest way is to choose from one of the seven preset color ranges but it's also possible to employ hue-specific controls to create your own collection of ranges. In that case you can toggle back and forth between the original and processed image, before printing, exporting, sharing via social media, using within a slideshow or dragging into another application. Achroma seems promising for quck adjustments but no doubt the approach will work more effectively on some images than others.
Achroma for OS X can be purchased for $9.99. More information and a trial version is available on the einstein's legacy site.