Thanks for your feedback!
We spend a lot of time making sure the images are as close to reality as possible. It is though impossible to make sure they look exactly the same on all different screens out there. Petrol is an especially tricky colour as it is indeed blue but with a green tone and can look very different in different lighting and on different screens. We explicitly write that it goes towards a dark turquoise meaning more blue than green but it always comes down to the eye of the beholder.
If you want to return it, see the instructions on our site for our simple return process. Also, remember next time, that we offer swatches so you can physically see the colours before you order the actual products.
