Thanks Mike,

The draw filter is a much neater solution. Yes, I'll only use it for the font colour.

fweeee said:

Is there no other way of doing this? Some sort of fancy appearance filter or something?

Well, you could use a DrawFilter. I would not recommend changing the font size this way, because the control's AutoSize won't account for the change. But if it's just the color you want, it should be a pretty easy DrawFilter:

this.ultraButton1.DrawFilter = new MyButtonDrawFilter();

    public class MyButtonDrawFilter : IUIElementDrawFilter
    {
        bool IUIElementDrawFilter.DrawElement(DrawPhase drawPhase, ref UIElementDrawParams drawParams)
        {
            drawParams.AppearanceData.ForeColor = Color.Red;
            return false;
        }

        DrawPhase IUIElementDrawFilter.GetPhasesToFilter(ref UIElementDrawParams drawParams)
        {
            if (drawParams.Element is TextUIElementBase)
                return DrawPhase.BeforeDrawForeground;

            return DrawPhase.None;
        }
    }

Thanks Mike.

I have tried turning off the appStylist on the button, but it made it kind of ugly.

I'm concerned about edting the appstyle - this might have unintended consequenses - as in, the appearance of some buttons may change (depending on how their properties are currently set).

Is there no other way of doing this? Some sort of fancy appearance filter or something?