macOS reduced transparency Light
Colors faithfully match macOS light mode with Reduce Transparency turned on in Accessibility system preference. Subtle gradient background image completes the look.
macOS reduced transparency Light Firefox add-on
macOS reduced transparency Light is a Firefox add-on that faithfully replicates the colors of macOS light mode with Reduce Transparency turned on. It also includes a subtle gradient background image to complete the look.
Add-on stats
Weekly download count: 2
Firefox on Android: No
Risk impact: Very low risk impact 
Risk likelihood:
Manifest version: 2
Size: 278.93K
Other platforms
Not available on Chrome
Not available on Android
Not available on Edge
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Add-on summary
The colors appear to have switch positions because Safari places the tabs bar under the main toolbar. I decided to keep the same color for the same elements, rather than the same position. I may do another version that goes the other way in the future.
v1.1 fixes a color issue with the URL field drop-down menu.
Add-on safety
Risk impact
macOS reduced transparency Light does not require any sensitive permissions.
Risk likelihood
macOS reduced transparency Light has earned a fairly good reputation and likely can be trusted.
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