If police come to your home claiming to have a warrant for your arrest and you request that they physically present the warrant to you is it required that they do so in Colorado?

No. The service of a warrant when the officers are notified by telephone or radio has been repeatedly upheld.

The burden on law enforcement of requiring them to present a physical warrant would be unreasonable, most particularly when a very large percentage of warrants are served during unexpected encounters between police and the subject of the warrant.