Currently, if you "like"a discussion post, the border of the thumbs up icon changes from grey to red, but the icon stays outlined, not filled. The distinction is subtle, and difficult to impossible for users with colorblindness or low vision to notice.
Changing the icon state from outlined to filled upon liking would improve the visual distinction between the unliked and liked states and would improve the accessibility of this feature.
Great catch! Canvas ought to try and avoid any icon/imagery where its status is defined with color alone — this is a basic accessibility practice. Filling in the thumbs up would be a visual change that colorblind/low-sighted students that would allow them to easily see whether or not they've liked something.
Hi Everyone! This is a great Idea, and I think it would get a good following. 🙂