Symbols and Colour and Direction - Oh my!

Following our visit to the Lansdowne council flat estate, I began to consider the issue of visual monotony apparent when walking between blocks. This becomes more so apparent when you notice that objects such as the typical bright blue Paper/Cardboard recycling dumpster become strong objects of the foreground (see below).
After a brief consultation with the estate waste collection workers, we learned that these bins are in fact frequently used - despite our initial suspicions.

Therefore I hypothesised a likely connection between strong colours and symbols and how our brains make connections between the two -instinctively over time. This could potentially lead to exploiting means of offering directional clues, some subtle or perhaps full on, to allow for easy navigation to a new systems/bins for recycling/waste disposal (see below).