From February 26th, 2018 to August 7th, 2018, 50% user give 5-star rating, 50% user give 2-star rating. for ColorA11y chrome extension.
Not easy to use. Lacking basic ease of use functionality. May be broken in latest versions of Chrome. Tested in Chrome Version 68.0.3440.84 (Official Build) (64-bit)
a bit odd to figure out, but fantastic once you do! Highly recommended!