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: Managing Settings and Mail
: Other web browser (please specify)
: Reading and Receiving Messages
: Google Chrome
Unfortunately not any from Google yet. The chances of that are pretty slim as the main ethos for this recent change is to achieve a consistent "look and feel" across all Google products and services. But if you are comfortable using external scripts, you may try out one titled, The return of old Gmail with Soft Grey theme to check if that meets your needs.