what is the meaning of yellow in this sentence...

[Yeleandraht]

Hello,

what is the meaning of yellow in this sentence?

As they turned round and ran away, people thought they were yellow.

Correct answer: (d) yellow

Your answer was: correct

i´d appreciate if someone could explain to me.... and ohhh by the way i found as well "plum job" on an exercise:

He is very lucky to have got himself a plum job.

Correct answer: (d) plum

What does it mean?

Thanks in addition!!

:)
Regards,

[Alan]

Hi,

'Yellow' is regarded as being cowardly, running away from danger. 'A plum job' is a very good job that everyone would want.

Alan
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English as a Second Language
You can read my ESL story Present Simple

[Yeleandraht]

Thank you very much!!!

:)
Regards