convert from Color to brush

SolidColorBrush brush = new SolidColorBrush( Color.FromArgb(255,255,139,0) )

you can use this:

new SolidBrush(color)

where color is something like this:

Color.Red

or

Color.FromArgb(36,97,121))

or ...

This is for Color to Brush....

you can't convert it, you have to make a new brush....

SolidColorBrush brush = new SolidColorBrush( myColor );

now, if you need it in XAML, you COULD make a custom value converter and use that in a binding

Brush brush = new SolidColorBrush(color);

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The other way around:

if (brush is SolidColorBrush colorBrush)
    Color color = colorBrush.Color;

Or something like that.

Point being not all brushes are colors but you could turn all colors into a (SolidColor)Brush.