How to Change Windows 10 Start Screen Colors, Background, Wallpaper & Themes

1 Go to settings

2 Touch Personalize

3 Go to choose your picture and choose a picture and the background is this image

4 To change start screen color go to color and choose color

5 To change lock screen go lock screen and choose your picture or Browse a picture

6 To change the visuals and sounds go to themes and change and change to what you want.