you could look at the following:
the inability for the indigenous to belong, how they are challenged by modernisation (represented by the trolley), the 3-3 groupings, no colour is involved...
i think it's a hard picture to do for beloning cos there's no colour, postion or texture and normalli, if u choose to do a visual as a text, u need colour cos u can bullshit about the symbolism and connotation of colours.
hope i helped...