Skin it is an addon I released in the Scirra store a while back, but I've made some new bug fixes to it and I think this should be the final release for it.
Construct 3:
construct.net/en/make-games/addons/362/skin-plugin
construct.net/en/make-games/addons/361/skin-behavior
Construct 2:
construct.net/en/construct-2/addons/364/skin-plugin/documentation
construct.net/en/construct-2/addons/363/skin-behavior
Also this is made 100% free.
The addons also come with some documentation and example files.
If you like what I do, consider supporting me on patreon :)
patreon.com/skymen