Have a look at these key art montages illustrating how key art is so stereotypical!
Most of the time wewe can tell the genre of a movie kwa just glancing at the poster.
There are 10 picha in the series link
for full viewing.
ex: machungwa, chungwa on black and white is action and crime
I think its the kind of thing wewe dont really notice until wewe see the comparison. wow.