Plug into bracket-matcher to know when cursor is on a matching bracket?

[trusktr]

Hello, I'd like to know if there is some API to know when the cursor is on a matching pair.

What I'd like to do is when the cursor is on a matching pair, I'd like to color the indent guide for that line a certain color.

For example, it could look something like the pink vertical line in this mockup when the cursor is on top of the { character:

I'm using the indent-guide-improved package to highlight the white indent guides for the current block that you see in the screenshot, but I manually added the pink line CSS in element inspector to mock it up.