I did not know Jun was not on the copy.
Anyway, I will ask Jun to measure Philip approved LSD color chart to get the Delta E reading.
The Delta E reading uses Standard Color as reference to measure Light and Dark. There is a Delta E reading for Light against Standard AND Dark against Standard Color.
There is no minus reading just positive Delta reading because of the Delta E formula is using difference square and total sum square root.
Jun, please help to measure the Delta E for Ecco LSD for Light and Dark against Standard Color, using Philip approved LSD chart, which done by me during the color approval stage with Philip. You may borrow from Nong/Kiang which we have distributed a copy for them for press proof.
I believe you have some measurement done as well when you prepared the second batch of LSD.