Invert the background & contrast handles to make crop handles more visible.

[fadulalla]

Hey, great package!

One request though: as handles stand, they can be difficult (and sometimes impossible) to see when cropping light images or images with white backgrounds (such as memes and and grid comics).

I'd like to suggest inverting the background so that the crop area itself is clear, and the area around it is dimmed. Also, adding a stroke to the border of the crop area should make it more visible, to contrast a possible light background. See before and after below.

Before:

I've made the changes in a fork, here:

If you agree with these suggestions, I'm happy to make any changes to my fork and open a PR. If not then I'm also happy to publish my fork as an alternative to your package.

Other than that, I just want to say great package, really. I've tried 2-3 cropping packages and none of them had everything I needed. This one did, super simple!

[pulstar]

Much better!

[diegoflassa]

Create a pull request!