Eclipse 2019 black background

For those who come here by googling, you can change the color of Java editor, Package Explorer and Outline views background in one place, see file

<..>.p2\pool\plugins\org.eclipse.ui.themes_<version>\css\dark\e4-dark_partstyle.css 

and then edit background-color

.MPart DependenciesComposite > SashForm > Section > * { /* Section > DependenciesComposite$... */
    background-color: #151515;
    color: #AAAAAA;
}

I found #151515 better than default one.