Cannot argue with Thirsty.
If you're repainting a high wear area within the year it might be okay, but after two the paint may have faded.
You can fudge this by doing an entire wall plane or a recess up to the corner.
The incident light will be different on each plane.
It may still look a shade out.
ONQ.
[broken link removed]
All advice on AAM is remote from the situation and cannot be relied upon as a defence or support - in and of itself - should legal action be taken.
Competent legal and building professionals should be asked to advise in Real Life with rights to inspect and issue reports on the matter at hand.