How to make a highlight around a PolygonCollider2D in unity?
<p>My question is as titled. I'm playing around with unity to get back into it to return to school, and I've decided to make a little risk type game. </p>

<p>Basically I have my map, and when I click one of my territories (which I have a polygon collider around, with an on click method attached that currently just toggles a small box sprite to test) I'd like to highlight the edge around the territory I've selected (the edge of witch the polygon collider covers). So I'm wondering if its possible to make a highlight effect based around the collider, or something like that.</p>

<p>My current plan is to just Photoshop the edges of all the territories into sprites and toggle them like the test sprite in order to create the effect, but if I can do it in a much simpler time effective way that would be great!</p>

<p><a href="https://i.stack.imgur.com/whpmx.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/whpmx.png" alt="enter image description here"></a></p>

<p>Thanks for the help if you can, and ask if you need more info!</p>