Marilyn, definitely shouldn't have to change out the main focus, the haworthias in that cute frame!. They can do well indoors with a little light or if possible I would (and do with a lot of my indoor containers ) move them to window light whenever I have the time to give them extra light whenever you can think of it.
Once, I made a container planting with haworthias and stuck them in a restaurant bathroom (with no window) as a little"green décor"
and a lady came out of the bathroom and asked to buy the planting...which tells me you can sell anything, anywhere to anyone...
Any sprig of fake foliage that compliments the stripes or form/shape of the haworthias would do as a bkgrd change if you must...