Add Padding to Image Crop Widget

I’m using Image Crop Widget (8.x-2.2) and Crop API (8.x-1.5).

I’m trying to add “padding” to the cropping area so that I wouldn’t have to cut my images at awkward places.

For example, with an aspect ratio of 4:3 and an image of 1000px wide and 200px hight, how could expand the cropping selection include the entire image? (By adding empty space to the top and bottom of the image?)

Hopefully, the colour of this added space, or padding, would be white, (or customizable).