CSS Style window background beyond page on Mac possible?

Question

Is it possible to style or color the window pane background of the browser?
When scrolling beyond the edge in Chrome and Safari on Mac,
the whole page is pulled a bit down and/or sideways.

It shows a basic canvas style of texture,
is it possible to style that region (with CSS) ?

Edit: i found a (crude) way to prevent the overscrolling entirely,
but i'm looking for a way to set a color or texture, to match the overall design.
Prevent "overscrolling" of web page

Answer 1

probably this is not needed anymore but maybe someone else wants to do the same :D

this should put a background-color on the overscroll-area of any ios device

body:after {
    content: '';
    position: fixed;
    top: -50%;
    right: -50%;
    bottom: -50%;
    left: -50%;
    z-index: -1;
    background: #000000;
}

here is the link to my gist