Tough choice - this one.
(And --- waaaaaiiiiiiillll! - I want summer back now!)
The intense blue of the sky is intriguing.
The clouds as main topic of your photo are better defined in the black and white, though.
I love colours.
I find the splashes of red by the people on the boats a tad distracting.
That is not the case when they are also black and white.
:scratch:
Still don't know...