Dark coloured head and forehead on knight (3-5)

'dark coloured' is the definition.
I don't know anything about this answer so I cannot judge whether this works.

'head and forehead on knight' is the wordplay.
'head' becomes 'nut' (informal term for somebody's head).
'and' says to put letters next to each other.
'forehead' becomes 'brow' (synonyms).
'on' means one lot of letters go next to another.
'knight' becomes 'N' (chess abbreviation).
'nut'+'brow'+'n'='NUT-BROWN'

Can you help me to learn more?