Let me be clear as I can
one door in bedroom has the timber as the adjacent wall (next to it) on one side and matches the adjacent cupboards on the other.
The kitchen door IPM should be supplying matching panels so this aligns with the cupboards next to it. The door to the maids kitchen has mirror on the guest kitchen side and on the opposite wall there is a fixed mirror that is identical. This way the black kitchen cabinets appear to go on and on.
Generally where a door forms part of a greater wall (ie its like a secret door) it is the same as the rest of the wall panel.
I hope this is clear, please refer to IPM and Pipop re the kitchen door above – they have included the panels in their quotes and so you should just need to fix these to the ace of the door – Pipop and Brianna discussed this at time of quoting joinery