What colour is khaki?
 

These two shots were taken this afternoon minutes apart when it was overcast and when the sun came out. Green or brown?

How many worms in a can?
 

:p

I agree though... khaki is one of those colours which varies just with the light, let alone batches...
Having said that there is a lot of variation not just from the colour temperature of the light but also what your auto white balance in the camera tries to make of it.
It's also a colour which fades to the almost yellow which you find on 60-something year old trucks in yards and paddocks.

An old problem
 

The same problem comes up in trying to figure out the correct colour for British aircraft in the First World War - with the colour of the dope ranging from brown to green to olive drab. No colour photos and surviving examples are faded and so on. One account I have says it was specced to be a kind of DTB, but shifted to green-ish depending on the application, fabric colour, weathering and so on.
Khaki means 'dusty' - originated in British India campaigning.

khaki
 

:teach: Khaki is from the urdal dialect in India
Pronouned kackee or as in the US Karkey, Translation is dirt colour
referred to br some as S### colour. Dusty is being nice.
Most Cdn. and brits ww1 uniforms were made in India. Some in ww2.
dennis gelean :support :support

Faded to yellow
 

The faded to almost yellow that Keith talks about is so true and can sometimes yield a nice original colour if you scrape the surface off. It's great to find as it tells you with certainty that you are looking at an original, un-mucked with surface.