Put color around a sprite

I have different sprites that the players can choose... depending on the team I want them to have a blue or red border... but I don't want the color to come in the sprite so I don't have to repeat all the sprites... there are more than 100 characters... how could I do it...

There are 2 user-made addons for outlines: construct.net/en/make-games/addons/449/better-outline and construct.net/en/make-games/addons/265/outline

Try them both and test performance impact, if any. I have found that these hit performance in mobile, but are negligible on desktop.