Initially coordinated hues, a mixture of coral and dark grey (8)

I believe the answer is:
charcoal
'dark grey' is the definition.
'charcoal' can be an answer for 'grey' (charcoal grey is a kind of grey). I'm unsure of the 'dark' bit.
'initially coordinated hues a mixture of coral' is the wordplay.
'initially' says to take the initial letters.
'mixture of' indicates an anagram (I've seen this in other clues).
The first letters of 'coordinated hues' is 'ch'.
'coral' with letters rearranged gives 'rcoal'.
'ch'+'a'+'rcoal'='CHARCOAL'
'and' acts as a link.
Can you help me to learn more?
(Other definitions for charcoal that I've seen before include "Standard" , "Black carbon produced by burning wood" , "Fuel used for drawing" , "Black stuff for burning or drawing" , "Very dark gray color" .)
