Thanks,
I will try solve the first issue, what about the second:
With default wordpress posts I want to use the default color background like page not post feature image. you can check following url or attached photo https://alzaidiah.com/%d8%aa%d8%af%d8%b4%d9%8a%d9%86-%d9%85%d9%88%d9%82%d8%b9-%d8%a7%d9%84%d9%85%d8%af%d8%b1%d8%b3%d8%a9-%d8%a7%d9%84%d8%b2%d9%8a%d8%af%d9%8a%d8%a9/