Dear Walter, thank you for this interesting question. First of all, blurred should be analysed in connection with being since being blurred is a non-finite complex verb phrase. The meaning of this part of the sentence is obviously passive; therefore, both formally and semantically, being blurred...
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Anonymouscategory of "blurred"? is it an adjective?Yes.
Anonymouswhat about what follows?Adjectival complement, as you say.
WHIZZO"beig blurred" is in the passive, so blurred would be the verb blur in the passive.No. blurred is an adjective. We could say that something is blurred or that it is very blurred or extremely blurred. Such adverbs of degree cannot be applied in the case of passives.