Color customization for Material Theme in VSCode 1.11.1

Recently I have switched to use VSCode IDE for Ruby and Elixir development.

And as I like to use Material Theme in editors (initially inspired by Sublimes Material theme), the same exist for VSCode. But not all panels are colored in Material colors (due to previous VSCode API limitations), and vscode-custom-theme extension helped with this (but now there is no need in it).

Since v1.11 VSCode has build-in support for color customization

"workbench.experimental.colorCustomizations": {
       "panelBackground": "#2f333d",
       "tabsContainerBackground": "#2f333d",
       "inactiveTabBackground": "#2f333d",
       "sideBarBackground": "#2f333d"
    },

This preset works for me to have a complete look of VSCode Material Theme