Soap This is really extra, but you can download a custom version of the account profile picture from Google. It'll let you customize the colors and stuff. https://fonts.google.com/icons?icon.query=account+circle I wanted my main user's account profile to match my material theme. Maybe you do too? If you want to do it without using google stuff you can take the vector paths out of AOSP from here: https://android.googlesource.com/platform/frameworks/base/+/master/core/res/res/drawable/ic_account_circle.xml
Novalissoide Soap Have you tried this flag in Vanadium? 'Customize the new tab page V2' Makes Vanadium new tab page themeable, and colour-customisable overall. Maybe not the best regarding 'melting in' with the crowd, but fun to test temporarily.
MyIdentityIsntImportant Soap Are you talking about setting the user account picture on the Owner user on the phone itself? Or changing your Google account profile picture? If it's the former, you can do so from Settings > System > Users and then by tapping the currently active profile on the list. That allows you to set both the profile name & picture for the user. Hope this helps.