@TomD8 just because they may be living in and working remotely from FL may not mean they are no longer a CO resident, just like living here does not make one a FL resident. I'm also not aware of how CO treats residents working remotely out of state. I'm guessing more details would be needed to address the state tax issue. But the OP is not asking about that.
As far as "want address in CO", if they still maintain a residence in CO, that should not be an issue. Just set up mail forwarding from the CO property to the FL address and expect such mail to take 10 or more days to get to the FL address.
Typically, I've only seen this done when the change of mailing address was temporary, meaning for less than a year.
