To do that, go to Settings > Accessibility > Display & Text Size > toggle on Smart Invert.
First, go to the App Store and download Google Docs, Slides and Sheets on your iOS device, if you haven't already.How to enable dark mode in Google Docs, Slides and Sheets on iOSīy tweaking a few settings on your iPhone or iPad, you can enable dark mode on Google Docs, Slides and Sheets.