The Economy Comfort seats are marked on each long haul seat plan - these are identified by the colour their headrests: orange in the A330-300, navy in the others. I am the first to admit navy is too subtle a distinction, so I may resort to orange as a standard accepting it isn't exactly true to actual seat colour in the majority of cases.

With the 737s, the business cabins are displayed at what I believed are their maximum size, or least my interpretation of KLM's VRs images
- 7 rows in the 737-700
- 6 rows in the 737-800 (BSI refitted version)
- 8 rows in the 737-800 (original version, not currently mapped)
- 10 rows in the 737-900

Taking the 737-700 as an example. My observations of KLM's VR walk-through:
- rows 1-3 have overhead bins marked "Reserved for Business Class"
- curtain was set between rows 4/5 at the time of the VR’s recording. It’s position does vary to match the particular demand of each flight
- rows 1-7 have navy head rest covers. From row 8 backward, the seats have light blue head rest covers

What I have also deduced is rows 1-7 are raked at a 85.9 cm pitch (33.8"). Pitch is otherwise 75.6 cm (29.8") not counting over wing exit rows.

So is it the operational norm to sell whatever the number of seats with navy head rest covers located behind the curtain as Economy Comfort?