At the moment in south east asia, it is towards the end of the "drier" season and the air is very hazy with dust and smoke, from forest fires. So the sky is perpetually grey and makes for boring washed out looking photos. So I have cheated in the photo below. I added the blue sky using a gradient tint (this example was created with picasa) If you look closely you will notice it has tinted everything, including the roof of the ferry terminal and nearby lighting tower. Since the roof is strong and dark it doesn't detract from the overall image.