RFR: 7124282: [macosx] Can't see table cell highlighter when the highlight border is the same color as the cell. [v8]

[Harshitha Onkar]

On Fri, 8 Apr 2022 07:55:57 GMT, Prasanta Sadhukhan <psadhukhan at openjdk.org> wrote:

>> @prrace @prsadhuk 
>> The issue with the system color returned by **keyboardFocusIndicatorColor** mentioned above, persists on macOS 12.3 as well.
>
> "accentColor" is swift property so not usable for jdk but you can use "controlAccentColor" which seems to work with 10.15 and 12.1 as per my limited testing.
> You need to use @available check though..
> Even though it may not work for version lesser than 10.14, I guess it's ok as those versions are more or less obsolete and we will not be worse off than where we are now...
> While you are at it, please consider renaming this function as told.

@prsadhuk Update PR with the recommended changes. The "controlAccentColor" changes works as expected in Mac 12.3 as well. 
One thing that I wanted to clarify with the fix is - the focus ring color ("Focus.ring") is used at two other places AquaButtonUI and AquaFocus (for focused icon). With the current fix I'm setting **KEYBOARD_FOCUS_COLOR** as below - 

<img width="1092" alt="image" src="https://user-images.githubusercontent.com/95945681/162673487-26006ca1-9373-4fe7-8f0b-f99cd47b2eb7.png">

Before and After images of focused icon -

**Before**

<img width="185" alt="image" src="https://user-images.githubusercontent.com/95945681/162674337-ebbfea9f-e753-4b4c-a624-7cef5b8d8c1b.png">

**After (focus around icon slightly darker - focus ring color obtained from controlAccentColor property)**

<img width="198" alt="image" src="https://user-images.githubusercontent.com/95945681/162674444-b917de71-8e91-472e-a8f0-da48df0a43a5.png">

Please let me know in case I need to add a NEW color (as shown below) instead of reusing the KEYBOARD_FOCUS_COLOR if the color effects on focused icon/ button doesn't look correct.

<img width="1099" alt="image" src="https://user-images.githubusercontent.com/95945681/162675955-efd9c77f-6d7b-41e7-803a-50f49154fba5.png">

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PR: https://git.openjdk.java.net/jdk/pull/7768