Not happening for M69. This won't make Mojave's initial release. :(

lgrey@, over to you :)

For 'blue', let's intentionally deviate and use Google Blue 600. All other accent colors can be used as-is. 

google blue 600 tracking at: 
https://bugs.chromium.org/p/chromium/issues/detail?id=875016&desc=3

I've attached a couple cases where I think this is causing low-contrast bugs (or at least, unfortunate regressions compared to other platforms).

* The first is in the card unmasking UI from payments sync.
* The second is in the javascript page action bubble.
* The third is a working-as-expected case of the accent color being applied to form controls.

The button/checkbox get the system accent color, but at a low-saturation (like a secondary version of the color).

Compare this to the in-page use of accent colors on forms (last attachment) where the color is used at full saturation.

Is this the same bug or should I file a separate issue?

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We haven't landed anything for this yet, so not *caused* by accent color work, but it might be fallout for how Mojave changed system colors for dark mode/accent colors. Probably a different bug, but I can look at it.