Z GMail Theme is a productivity chrome extension. it's a free extension , it has 23 active users since released its first version, it earns an average rating of 3.00 from 2 rated user, last update is 2257 days ago.
If you work for Z and would prefer the logo in GMail would have a transparent background. If you'd like a company themed background image, here is a link: https://d16psrqvoeay1v.cloudfront.net/z-background.png Source: https://github.com/marsmining/z-mail-theme
You could download the latest version crx file or older version files and install it.
English (United States).
50% user give 5-star rating, 50% user give 1-star rating. Read reviews of z gmail theme
You could find more help information from z gmail theme support page.
You could send emails to publisher, or check publisher's website.
More about manifest_file of z gmail theme.
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NOT WORKING
Your little extension does exactly what I needed, but is there any way to set my own image instead?