Well please don't call the thought police on me, God knows this country is already headed for an Orwellian nightmare.
To the OP: I think you should be fine, as long as you watch out for the reticulated python check points as you cross into Colorado. I've heard that across the U.S., on every major highway that intersects state borders, there are thousands of federal agents stationed at strategic checkpoints to search all vehicles for Reticulated and Burmese python contraband. Don't let the desolate wide open fields of the Colorado/Kansas border fool you. Even though you likely won't see anyone for miles around, there are rumors that there are SWAT units in ghillie suits camouflaged in the grass, waiting for the unsuspecting snake smuggler to attempt to cross a border. The federal manpower that the government is throwing at this is astounding. Teams from the FBI, CIA, Homeland Security, Secret Service, Forestry and Wildlife, USDA and even private vigilante motorcycle gangs are all coordinating to prevent these snakes from crossing borders. I wont even mention the scores of drones and satellites that have been taken off of terrorist cell surveillance to scour the lower 48 for possible python trafficking. If you are brave enough to run this gauntlet, I recommend a disguise for the retic. Maybe a hat, some sunglasses and a fake moustache would do the trick? Likely having the retic out of sight in an enclosed tub will NOT be enough to hide him. When you go through the checkpoint just stay calm. Remember, even though these agents have absolutely no just cause to search your vehicle, they likely will anyways. Keep in mind that they are now training reticulated python sniffing German Shepherds to find pythons at these checkpoints. I do not advocate embarking on this danger wrought adventure, but if you do, good luck to you!
