Simple window shades made from masking tape.  Take the plain old masking tape roll, the off-white color and cut a piece off to place on the inside of the building window.  Usually covering the top half of the window is the way to go to show a half drawn window shade.  But to mix it up you can cover any amount of window to show a fully drawn window shade to a partially drawn window shade.  And they do make masking tape in various colors to match your need!

RSLaserkits Cheltenham Station Build by Modelersguild.com

If someone had told me two months ago, that there is such a thing as a Z scale Craftsman kit, [ ... ]

This is the first mainline run without any of the extras.