Colour in comic book character (6)

I believe the answer is:

tintin

'comic book character' is the definition.

'colour in' is the wordplay.
'colour' becomes 'tint' (tint is a kind of colour**).
'tint'+'in'='TINTIN'

(Other definitions for tintin that I've seen before include "Herge's cartoon hero" , "Comic character" , "Herge's adventurous young Belgian reporter" , "cartoon character" , "Herge's adventurer" .)

I've seen this clue in The Guardian.

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