Google Chrome custom theme not working in incognito mode

How to set some other theme in incognito mode? Currently bar is so dark, I can't clearly see anything. This is what I used to use:

1. In experimental (chrome://flags/) I enabled "Allow widgets to inherit native theme from its parent widget" function.
2. I installed plain theme.

Starting today, it stopped working. After every problematic update I always managed to find some workaround.

2 Answers

For me custom themes also stopped working in incognito mode today. They already stopped working some weeks/months ago and I was able to fix it with the #inherit-native-theme-from-parent-widget flag set to "Enabled"

I was able to get them working again by setting the flag chrome://flags/#incognito-brand-consistency-for-desktop to "Disabled". After that I was able to return chrome://flags/#inherit-native-theme-from-parent-widget to "Default" and themes seem to work again in Incognito mode.

In chrome://flags search for

"Enable Incognito brand consistency in desktop."

Set this flag to disabled. Then the incognito theme is what you defined for non incognito mode.