A designed as rectangular bathtub indicates the classic one. The Simplest, The Characteristic. It is the common form of the bathtub, here we have other rectangular bathtubs but we believe that is it the best and common one. Size in the 1500mm and 1700mm length also the basic range for the bathtub, Madrid Multifit as well.
The colour discrepancy may incur depending on the monitor specifications or resolutions.
Please also check via your phone or face to face at the store for making sure.