Red and Blue drain caps

[SJSS Slingshot]

We have a 2012 Slingshot M19 camper, and bought it used. The hot water heater and fresh water tank is located on front driver side , and under the camper is three drain caps. I know the black one drains the fresh water tank, but I do not know what the red and blue caps are for. I suspect hot and cold water but from where?
Thanks for any help

[fhenn]

The red one drains your hot water line, the blue one drains your cold water line

[travelin texans]

They're low point drains when winterizing,, open both valves & then open faucets starting at the furthest faucet from drain to drain hot/cold lines.

[SJSS Slingshot]

Thank yall for the info, very helpful.