ピンク

How it works

の (of) links one noun to another, so ピンク (pink) attaches to バラ (rose) to mean “pink rose”. は (topic) then raises that whole phrase as the topic — “as for the pink rose…”. The i-adjective 美しいうつくしい (beautiful) ends the sentence as its own predicate: it needs no です (is) to stand as the description, so this plain form sounds calm and matter-of-fact.