Meanings of colloquial speech in English

His colloquial speech accorded badly with his formal tone.

But the Colonel's colloquial speech was apt to be fragmentary incoherencies of his larger oratorical utterances.

The phraseology is less literary, and more taken from the colloquial speech and the usage of everyday life.

He did not use them to show off, but because they seemed to him more adequate than colloquial speech.

The wheel which he had jogged so agreeably had come full round, and, in colloquial speech, had biffed him in the eye.

Mr. Howells, a master of English, may be taken as a faithful reporter of the colloquial speech of Boston and New York.

Whatever may be said against employing contractions in dignified discourse, their use in colloquial speech is too firmly established to justify our censure.

Do you notice elements that give the text a flavor of oral storytelling, such as colloquial speech or occasional use of second person or questions?