 Although all the colossal heads are broadly similar , there are distinct stylistic differences in their execution . One of the heads from San Lorenzo bears traces of plaster and red paint , suggesting that the heads were originally brightly decorated . Heads did not just represent individual Olmec rulers ; they also incorporated the very concept of rulership itself . 
 Although all the colossal heads <a href='drop_aux' title='1'><mark>are</mark></a>broadly similar , <a href='dey_it' title='2'><mark>there</mark></a> are distinct stylistic differences in their execution . One of the heads from San Lorenzo <a href='uninflect' title='3'><mark>bears</mark></a> traces of plaster and red paint , suggesting that the heads <a href='uninflect' title='4'><mark>were</mark></a> originally brightly decorated . Heads did not just represent individual Olmec rulers ; they also incorporated the very concept of rulership itself . 
Although all da colossal heads broadly similar , it is distinct stylistic differences in their execution . One of tdaheads from San Lorenzo bear traces of plaster and red paint , suggesting that thdaeads was originally brightly decorated . Heads did not jus represent individual Olmec rulers ; they also incorporated the very concept of rulership itself .