You can't increase the depth of cupboard by just adding plywood doors. You have to apply wood to sides of the cupboard also. Suppose you have a corner cupboard, then either on left or on right side you have to add a wooden plank vertically. In this case the final cupboard will be a few inches out from the wall. It will look a bit awkward.

Hello Inderjot, In my opinion painting the bidding in black/grey would make it merge with the laminate. You have some section on the loft that also show the inside laminates, even those may be colored. In case, you want to see how it may look like with black paint/ you may temporarily stick black craft papers on the bidding take a few pics and then decide whether you want to color them or not. Left side may need a laminate replacement . Thanks Nitin CORNERSTONE DESIGNS Bangalore.

what exactly is your requirement? is it the internal segregation or finishing materials?

Good oneὄCὄC