FWIW...

There are a few Colorado Supreme Court and Court of Appeals cases that discuss CRS 18-1-704.5. They seem to primarily focus on the definition of "unlawful entry". None of them discuss, as a significant issue, whether or not the statute should apply because of some distinction between the defendant's life being threatened vs. any lower threat of physical force (i.e. "no matter how slight").

Remember Zoey Ripple? The drunk CU grad who was shot when she entered the wrong house? She was armed with nothing but a cell phone and ethanol-dulled wits. The homeowners thought she was carrying a flashlight and they were being robbed. Nothing about any threat to their lives (real, imagined, or otherwise). While Ripple was charged with felony trespassing, no charges were filed against the shooter.