how to change explorer background and popupbackground in win10?

[louqian000]

i have used wsb to change image with folderbackground,but it`s not show the image with uxpatchtheme for 10586.
should i have to use an custom shellstyle together?how can i edit the shellstyle.dll to make explorer background to display?
Lists, Menus, & Tabs > immersive context menu > PopUpBackground ,how to make this path replace to an image to show sucessful?