Shade of first produced printing fluid (4)
I believe the answer is:
pink
'shade of first' is the definition.
'pink' can be an answer for 'shade' (I have seen 'A shade' mean 'pink' so perhaps 'shade' could also mean 'pink'). I am unsure of the 'of first' bit.
'printing fluid' is the wordplay.
'printing' becomes 'p' (this might be a standard abbreviation which I don't know about).
'fluid' becomes 'ink' (ink is a kind of fluid).
'p'+'ink'='PINK'
'produced' is the link.
Can you help me to learn more?
(Other definitions for pink that I've seen before include "Light red - flower" , "Colour it's healthy to be in" , "Left-wing" , "Rather embarrassed" , "somewhat to the left?" .)