Read the passage. style guidelines for use of the colon a colon can be used to introduce a list of items. the clause preceding the colon must be a complete sentence capable of standing on its own. use a colon to introduce a list only if there is no introductory expression such as namely or for instance. this guideline applies regardless of whether or not there are internal commas in the list. a colon is not used to introduce a list of direct objects following a preposition in the main clause. which sentence conforms to the style guidelines? his paintings are of: flowers, birds, and trees. i love many kinds of music: country, rap, hip-hop, jazz, and rock. certain footwear is required, namely: soft-soled shoes and socks. my dad's favorite, quick lunch: pizza, salad, and a brownie.