My bike has a Colorado registration plate 676-HAS with a dealer sticker? Colorado Powersports on rear fender.
The CO registration, plate, & dealer sticker has nothing to do if it is a 49-state bike (likely) or a CA-state bike (unlikely, but possible).
There are no CO State bikes. (except all states title and register and plate them to collect tax revenue from us. Something that is probably quite common in the UK too.
Tax them at sale, some states personal property tax them forever, tax every gallon of gas, every quart of oil, every tire (and again when they get thrown away), inspections. The list is endless (just like government bullsh!t.)