How do I Get a Vector3 Color?

I'm attempting to mess around with fog settings for a map I'm working on and the FogSetAll node requires a Vector3 Color input and I cannot find any node that outputs that variable type, nor do I know its format so I can put it in a constant to attach to the node. Is there some way to generate this value? Is there a node that outputs that value?

Node that requires the Vector3 Color:

 

Vector3 most commonly refers to a colour defined as RGB values, often as 3 integers between 0 and 255. How they need to be represented for the input field you need, I cannot say.

handy online conversion tool.. https://www.rapidtables.com/convert/color/rgb-to-hex.htm

 

I've checked the website and have tried all combinations of things however I still can't find the proper format to allow the node to accept a constant with values. Also, me going into the environment.sbc and Sandbox.sbs files and changing values there have no effect.
--update-- After testing, it will not allow me to attach a constant to the Vector3 input. When connecting an empty constant to an RGB input it will allow it then change into a color selection dropdown.