Unable to change color of Tile bar in Articles

[balam]

I have tried all the option. The title bar of my articles is orange in color; I want to change it matching to my themes. For eg, the title bar of blocks appearing on my site is "catbg+windowbg". But I am unable to change the title bar of my articles (it is orange i.e. "titlebg+windowbg")
Please suggest.

[WillyP]

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