imported post
I simply use a short jacket, and place the jacket edge such that the gun and holster are on the outside of the jacket.
However, since you're from Texas, if you have a concealed carry permit there, then you can also simply carry it concealed.
According to the El Paso County Sheriff's Office Concealed Handgun Program, Colorado has reciprocity with Texas, as of March 10, 2009. This is covered in CRS 18-12-213, which states that Colorado will recognize a valid permit issued in another state IF the permitee is 21 years of age or older AND the other state recognizes Colorado permits as valid in their state.
When I carry concealed, I often simply wear my longer jacket, as my side holster is more comfortable than my belly bag, paddle, or underarm holsters. In the summertime, I often don't worry about concealed carry and simply open carry.