Phyllis was taught as a kid that red and pink should not be worn together.
If this is common knowledge in the English-speaking world, I’ll warrant a guess that the designer of these cupboards wasn’t from here.
However, if the designer was Danish, the colour scheme becomes understandable:
In Danish, the cupboard on the left is mørkeblå “dark blue” and lyseblå “light blue” (so no surprises there!), while the one on the right is mørkerød “dark red” and lyserød “light red”.
In other words, Danish for “pink” is “light red”, so to a native Danish speaker the cupboard is painted in two shades of the same colour, just like the blue one.