Don't spend the money to match the exterior finish of the cabinetry on the cabinet interiors, you want the interiors to be easy to clean and a light material so you can see what is inside them. No one will notice or care if the interiors match the exterior (these days it is pretty much industry standard that they do not match) If the cabinet doors have glass fronts then definitely match the exterior or use a pop of paint color on the cabinet backs.

Hi, Rajendra, there are three way of doing, firstly what you have chosen is go minimalist with all white, here you will have to add colors by decorating wall or adding a symbolic decor or art mural/painting which will bring you a joy while working. but if you neglect the importance of art work, the kitchen will be boring to use after 6 months of use. as we enjoy spices in our food , so do our eyes enjoy a sense of catchy colors too. second will be adding a contrast in with back splash with a back painted tempered glass or corian, this woks wonders. third, with the color of your choice, which will be permanent in the cabinate, but gives you a fresh sense to the whole kitchen, little color here and there will attract your eye and you'll appreciate your own choice/selection again and again.

Visual below is similar case like your preference of using wooden texture laminate with black counter top & lighter floor. Check out misty oak, pine, birch... in laminates!

So i’m guessing you’re saying that oil paint/enamel paint looks cheap? That makes sense cause whilst i was growing up, the govt quarters came with oil painted doors and it chipped off in a few years in a sorry state. Don’t want that. So oil paint is out? What I’m gathering is that PU paint is not just paint. It’s a process? So you prime and paint(?) first and then do a protective coating of PU with the thinners and the additives? Am I getting this right? :P