The Abu Dhabi F1 Circuit (City related)

Just watching the Grand Prix and it occurred to me that the entire circuit is trimmed in sky blue, which is unique in Formula 1 as far as I am aware.
I just wondered, with our connections with the country, if this is anything to do with City or just to make it look pretty?
I just wondered, with our connections with the country, if this is anything to do with City or just to make it look pretty?