I'm trying to implement a method for dynamically changing font_color in Labels and Buttons. I have one method that is used for both initial application and for updates, but only the first value passed ever gets used.
public void OnColorChanged(string key, Color color)
{
GD.Print("StandardLabel::OnColorChanged " + key + " from " + label.GetThemeColor(key).ToString(".00") + " to " + color.ToString(".00"));
label.AddThemeColorOverride("font_color", color);
}
I can see that the method is being called and recieves the correct new Color values, and there are no runtime warnings or errors, but the value returned by GetThemeColor (and the Color visible in the game screen) is always unchanged- it returns the first value that was applied. Any further calls to AddThemeColorOverride don't change anything.

I even tried re-writing this to call RemoveThemeColorOverride first, or to call RemoveOverride and then wait a frame before applying the new value. Nothing works.

Whats the deal here? Is AddThemeColorOverride only meant to be called ONE TIME and can't be changed later? How can the value be modified more than once? Is there some extra method I have to call to get the value applied?

EDIT 1:
Even more confounding is that if I use the Remote browser, the "Font Color" property can be changed and the value on the screen updates accordingly. How is changing the value in the editor different from calling AddThemeColorOverride?

EDIT 2:
The same issue exists when using the Label's Modulate property. Only the first value applied sticks.

    plango when are you applying this signal? you should be able to just modify the label in code using modulate.

      The code is originally triggered from the "ColorChanged" trigger from a ColorPickerButton. It gets passed to a container Object that holds the Label.

      While hunting for solutions though I tried just storing the value and applying it at the next _Process(dt) call and it didn't change anything.

      As I stated in an edit, using the Label's Modulate property gives the same result as using AddThemeColorOverride. Either way, the FIRST time I set it works but any subsequent times setting it are ignored.

      I'm being to think this is a Godot issue and I need to open a bug report.

      EDIT:
      The thing that makes me really think that this is a Godot issue is this. The ThemeColorOverride is initially set in the _Ready() method of the container object. If I go to the color picker and change the color BEFORE the object is added to the tree and visible and the _Ready() method is called, the new correct Color from the Picker is applied. But for any objects that were added prior to the Picker change, they still have the old original color.

      Never mind, this turned out to be an unrelated learning issue I had related to how the _ExitTree method was used. NAB.