Investigate: add a color contrast toggle to the site

[jamiefolsom]

Based on Access Scholar's recommendation. Research, and update this issue with a proposal. Timebox: 1 hour.

[feralresearch]

I have one of these on my personal site (Click the eyeball icon at the top of http://digitalscenographic.com/).

This is very straightforward vanilla javascript: swap the stylesheets on request.

The challenge is to persist the change across visits. In my case I used HTML5 Web Storage which is also very straightforward:
https://www.w3schools.com/html/html5_webstorage.asp

It seems widely supported:
https://caniuse.com/#search=localstor

Would this be ok for our site? The work would mostly be creating the stylesheet.

[jamiefolsom]

👍 Love this idea. I don't see it in action on your site, but fine by me to try it out, and see how people like it.

[SteveMarvin]

I don't see how to test this. Is it implemented?

[feralresearch]

@SteveMarvin Sorry I think I just put this in the wrong lane, still learning the ropes - this is in this PR: #11

[SteveMarvin]

working