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Hey, yes I used an app called 'Animator' which allows you to use a dropper function tool so you can dropper the existing colour of the background image, and bucket fill between the lines. Its a very basic app (and has that 'picsart' hallmark) but worth a try for basic gifs. Its a cool thing to have on your phone for when you're feeling inspired, or just bored!

Awesome. Thank you! Much appreciated the detailed response :)