I think I have the complements right (see what's in brackets), but I need to say whether they're predicate adjective, predicate nominative, direct or indirect objects.
At first this Saturday had been a warm, sunny [day].
However, the sky became [greyer] and [greyer] as the fans filled the [stadium].
Carefully, Jackie handed me her new [binoculars].
Your complements are correct, except you missed "me" in the last sentence.
Study these definitions:
predicate adjective: adjective that describes the subject of the verb
predicate nominative: noun or pronoun that means the same as the subject of the verb.
direct object: noun or pronoun that receives the action of the verb. It answers "what" or "whom" after the verb.
indirect object: noun or pronoun that answers "to" or "for" "whom" or "what" after the verb.
I'll be glad to check your identifications of these complements.