Re-examining the bubbles in Mac Canary, the strokes on the textButtons are 0.5 px and not the requested 1px (red square in the attachment). I believe this is an artifact from Shiny Modern's proposal of half-pixels. 

Feel free to assign back to me when there's a correction. I'll leave the spec as-is until we can verify if the current specifications are adequate for retina screens. 

Deleted: Screen Shot 2016-09-30 at 12.53.20 PM.png 66.9 KB

	Screen Shot 2016-09-30 at 12.53.20 PM.png 66.9 KB View Download

Deleted: Screen Shot 2016-09-30 at 12.53.26 PM.png 102 KB

	Screen Shot 2016-09-30 at 12.53.26 PM.png 102 KB View Download

Hi bettes@,

The red square is 1pt, not 1px. 1pt at 2x is 2px x 2px. What you are seeing is how Harmony buttons are being stroked in 1px no matter the scale factor.

If you specify a 1pt stroke for buttons you'll get a 2px width that matches your red square. In the e-mail thread you said that you wanted a crisp 1px line at 2x, in which case you don't really want the stroke to match the red square. But to compensate for the lightness of the 1px line at 2x (it's essentially 0.5pt), we need to increase the darkness of that line.

Is what I'm saying making sense?

> Re-examining the bubbles in Mac Canary, the strokes on the textButtons are 0.5 px and not the requested 1px (red square in the attachment).

To further clarify the problem with this statement, you cannot physically draw a 0.5px line. By definition, the thinnest a line can be is 1px. You can draw a 1px line at 0.5 gray to simulate a black 0.5px line, but a 0.5 px line is not possible to achieve.

Just to further drive home that this is not a Shiny Modern problem or a Mac problem, here is a screenshot of the bookmarks dialog on Windows. The scale factor is either 1.5x or 2x. You can see that the button strokes are 1px.

Deleted: Screen Shot 2016-09-23 at 5.42.34 PM.png 43.3 KB

	Screen Shot 2016-09-23 at 5.42.34 PM.png 43.3 KB View Download

Hey Jayson, 

Apologies for the confusion. I made the mistake of not converting my screenshots to the appropriate 72 ppi, thus my "red square" was not a true pixel. 

I've updated the spec with an increased alpha value of 0.20 for both 1x and 2x. I want to avoid having ratio-dependent specifications, if possible. That type of granular customization isn't very scalable so let's see where we land with the new specs. Thanks for addressing the concern. 

SPEC:
https://folio.googleplex.com/chrome-ux-specs-and-sources/Chrome%20browser%20(MD)/Secondary%20UI%20Previews%20and%20specs%20(exports)/Spec#%2FSPEC-secondary-UI-04a-buttons-light-theme.png

Deleted: Screen Shot 2016-10-03 at 9.25.47 AM.png 69.8 KB

	Screen Shot 2016-10-03 at 9.25.47 AM.png 69.8 KB View Download