Paint, for example, good racing boat (8)
I believe the answer is:
eggshell
'paint' is the definition.
(eggshell is a colour of paint)
'example good racing boat' is the wordplay.
'example' becomes 'eg' (short for 'exempli gratia', 'for example' in Latin).
'good' becomes 'g' (abbreviation).
'racing boat' becomes 'shell' (shell is a kind of racing boat).
'eg'+'g'+'shell'='EGGSHELL'
'for' is the link.
(Other definitions for eggshell that I've seen before include "Thin and delicate" , "Fine finish" , "Type of translucent porcelain" , "Thin type of china" , "(Of paint) having a very slight sheen" .)