Feature request: func cli colors opt-out env flag

An image is worth a thousand words.

In console the dark black is not readable.


The issue names no files, tests, or entry points; begin by locating the CLI's console color handling and configuration sources. Confirm how an environment-variable opt-out should affect the unreadable dark-black output shown in the attached image, then add coverage for the flag and verify the console output is readable when it is set.

Written by the indexing model from the issue text.