Quite often our clients select bathroom tiles that are 'safe' and 'won't date too quickly', despite the fact that they really love a particular colour or look.
It's quite clear the the owner of the above bathroom loves blue as they have committed to the colour in a very large way, and there is no reason you shouldn't too!
If used well, colour can look fantastic! In this bathroom, the blue tones all work together to create a very luxurious space. They are then grounded by the neutral floor.
If you are staying in your house for a number of years, whatever you pick will be dated by the time you sell anyway, so why compromise on having what you love?
Finally your home should be a reflection of the people who live in it. If you are vibrant people who love a bit of colour, then why compromise so that other people like it?