Following a recent update, the text in the address/search bar and tabs labels text has become noticeably dimmer, reducing readability. I attempted to resolve this by adjusting the secondary color lightness in the detailed theme settings, but this parameter remains locked. I would appreciate either:
- 
The ability to modify the lightness setting, or
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A reversion to the previous default text brightness for better visibility.
 
Related Issue: Unintentional Early Access Update Channel
In the opera://about/  page I noticed that update channel is set to the Early Access , though I did not enable this intentionally. Since I prioritize stability over experimental features like this text lightness one, I would like to:
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Switch back to the stable release channel,
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[ideally] Have the option to disable automatic updates entirely, opting for manual updates instead.
 
Thank you for your assistance!