I followed your CO law link, and it looks like CO does not have an explicit exception for approaching intersections (unless you're turning left):
5) Any person riding a bicycle shall ride in the right-hand lane. When being overtaken by another vehicle, such person shall ride as close to the right-hand side as practicable. Where a paved shoulder suitable for bicycle riding is present, persons operating bicycles shall ride on the paved shoulder. These provisions shall apply, except under any of the following situations:
(a) When overtaking and passing another bicycle or vehicle proceeding in the same direction;
(b) When preparing for a left turn at an intersection or into a private road or driveway;
(c) When reasonably necessary to avoid hazardous conditions, including, but not limited to, fixed or moving objects, parked or moving vehicles, pedestrians, animals, or surface hazards.
In your state we must argue that it is not practicable to ride so far right in a lane at an intersection approach where you're going straight that it will invite right turners to right hook you. This reasoning is the basis for many states putting in an explicit exception for intersections. You can also argue subparagraph (c)...
When reasonably necessary to avoid hazardous conditions, including, but not limited to ....