How do I change the sprites?

I won't answer this question because I don't know the answer. But as a player, here's what I can ask. PLEASE, don't do this. If I have a huge map with a bunch of these "chameleons" on it, as you suggest, how am I supposed to view it? By clicking on each object individually, hovering the mouse over it, forgetting where things are, and trying to remember which quest is associated with what? What is the purpose of this action? To confuse and mislead the player, to overload their brain with the need to remember unnecessary details? I often complete maps with these kinds of tricks almost from the start (with some exceptions). The question is, why introduce negativity into the map?