I checked, and Telluride apparently is a home rule city.
Their ordinance is as follows (it looks to me like you could open carry if you have a valid concealed-carry permit):
Sec. 10-8-20. Unlawful use of weapons.
(a) Except as provided in Subsection (b)
below, a person commits unlawful use of weapons
if such person knowingly and unlawfully:
(1) Carries on his or her person any
concealed deadly weapon.
(2) Carries on his or her person, or
possesses, any firearm, whether concealed or
not, or displays any firearm.
(3) Displays, brandishes or flourishes any
deadly weapon in a manner calculated to alarm
another person, or intentionally aims any
firearm at another person.
(4) Discharges or causes to be discharged
any firearm, air gun, gas gun, spring gun, any
instrument, toy or weapon commonly known
as a pea shooter, slingshot or beany, or a bow
or missile projector of any kind, whether such
instrument is called by a name set forth in this
Article or by any other name.
(5) Possesses any deadly weapon while
either:
a. Under the influence of intoxicating
beverages; or
b. On the premises where intoxicating
beverages area sold for consumption on the
premises.
(b) Carrying a deadly weapon shall not be an
offense if such person is:
(1) In or on his or her own dwelling, place
of business or property, or property under his
or her control.
(2) In a private motor vehicle or other pri-
vate means of conveyance and is carrying the
weapon in plain view for lawful protection of
his, her or another's person or property while
traveling.
(3) Directly proceeding to or returning
from target practice or hunting and is carrying
the weapon in plain view.
(4) In possession of a valid written permit
to carry a concealed weapon, which permit
was duly issued pursuant to state or federal
law. (Prior code 9.20.030; Ord. 1288 §1,
2008)
Sorry about the formatting -- the entire code is at
http://www.telluride-co.gov/Modules/ShowDocument.aspx?documentid=810 and may be easier to read.