Final answer:
The sentence 'Por ejemplo, rojo es uno de los colores' is grammatically correct.
Step-by-step explanation:
The sentence 'Por ejemplo, rojo es uno de los colores' is grammatically correct.
'Por ejemplo' means 'for example' in English. In this sentence, 'rojo' means 'red', 'es' means 'is', 'uno de' means 'one of', and 'los colores' means 'the colors'.
The sentence is structured correctly with the subject 'rojo' followed by the verb 'es' and the object 'uno de los colores'. Therefore, the sentence is grammatically correct.
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