Green or black knob LP pigtail

[bnbsnive]

I need to replace one of the LP pigtails that goes from the LP tanks to the auto-switching valve. After some searching I've found that there are two levels of hose capacities that are indicated by the color of the knob that attaches to the LP tank, green or black. The green is rated at 200,000 Btu/hr and the black at 70,000 Btu/hr.
We own a 2015 23D Flying Cloud that was OE equipped with green hoses. My question is if I need to replace with green or if the black will work as well? Is more than 70K Btu/hr needed of if just you're using all LP appliances at once? Or is it just best to replace with the same as OE?
Thanks to all in advance for input.

[nvestysly]

I used green on our trailer and they were readily available at RV parts dealers and propane dealers. I don't see any reason to change. Stove, oven, water heater, outside propane grill... it's easy to see 200k Btu is the way to go.

on edit:

There even available on Amazon -