So I am new to using cui and c# but I used a builder to make a decent looking ui for rust and exported it as json. I was told that I needed to convert this for cui use so I just took the values and changed them for c#. This worked pretty well except the fact that two of my pannels which should have a faded look, meaning i can see through it a bit, don't have it. When I check the json file for some sort of part saying like fade = x I did't find anything. I thought it might be stored in the color code except I copied it correctly. How can I get my pannels to have a faded look?

You cant. You only can create faded image in PS and import it as image

var elementContainer = new CuiElementContainer ();
elementContainer.Add (new CuiPanel {
    Image =
    {
        Color = "0.02 0.02 0.02 0.82"
    },
    RectTransform =
    {
        AnchorMin = "0 0",
        AnchorMax = "1 1"
    }
}, "Hud", "ParentMsg");

That will allow you to create a panel (attached to ParentMsg) in the Hud layer that is 82% opaque