The customization of the "Advanced Site colors" doesn't work for some blocks. i.e. "Page Title" and "Main Menu"
Use "Indigo" as Predefined Color Theme
Add class w3-pale-green to "Page Title" and "Main Menu"
Clear Cache
Reload site and validate that no color changes have occur.
Closed: works as designed
2.0
User interface
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It's likely this issue predates Contrib.social: some issue and comment data are missing.