Little one quiet and rather pale (7)
I believe the answer is:
whitish
'rather pale' is the definition.
(I've seen this before)
'little one quiet' is the wordplay.
'little' becomes 'whit' (I've seen this before).
'one' becomes 'i' (Roman numeral).
'quiet' becomes 'sh' ('sh' is used to tell someone to be quiet).
'whit'+'i'+'sh'='WHITISH'
'and' is the link.
(Other definitions for whitish that I've seen before include "Rather pale" , "Nearly snow-coloured" , "Pretty snowy" , "cream!" .)