How is color screen related to Google Play store at all? Try opening any website on an e-ink device and I can guarantee that the greyscale is good enough to let you understand what a picture is about. That's good enough for Play store (and many other apps).
I worked for a company making custom Android devices for industrial purposes. We weren't allowed to have the Play Store because we didn't have a front-facing camera. Google has a lot of (seemingly arbitrary) rules for Play eligibility, or at least they did back then.
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How is color screen related to Google Play store at all? Try opening any website on an e-ink device and I can guarantee that the greyscale is good enough to let you understand what a picture is about. That's good enough for Play store (and many other apps).
I worked for a company making custom Android devices for industrial purposes. We weren't allowed to have the Play Store because we didn't have a front-facing camera. Google has a lot of (seemingly arbitrary) rules for Play eligibility, or at least they did back then.