Blue. That is what stands out for me in Addis Ababa. Not to say that the entire city is blue but the taxi cabs and some of the public buses are blue. And vintage. I spent a long time trying to sort out what type of cars were in use as taxis. They looked like old Fiats. I spotted an old Peugeot 504 parked on a small rise, looking like it was dead on arrival. The buses are big. Addis is a bit noisy and pretty busy. Blue was what really stood out for me.