Anglo Saxon heathen lacking warmth, looking pale (5)

I believe the answer is:

ashen

I'm a little stuck... Click here to teach me more about this clue!

'looking pale' is the definition.
'ashen' can be an answer for 'pale' (I've seen this before). I'm unsure of the 'looking' bit.

'anglo saxon heathen lacking warmth' is the wordplay.
'anglo saxon' becomes 'as' (this could be a standard abbreviation I've not previously seen).
'lacking' suggests deleting specific letters.
'warmth' becomes 'heat' (synonyms).
'heathen' with 'heat' taken away is 'hen'.
'as'+'hen'='ASHEN'

Can you help me to learn more?

(Other definitions for ashen that I've seen before include "Shane (anag.)" , "Wan - wooden - pallid" , "Like bird" , "Grey, pallid" , "Grey-faced" .)

I've seen this clue in the Evening Standard.

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