protected override IBrush GetCurrentValue(Double runningPct)
{
var a = Convert.ToByte(_startA + _alphaDiff * runningPct);
var r = Convert.ToByte(_startR + _rDiff * runningPct);
var g = Convert.ToByte(_startG + _gDiff * runningPct);
var b = Convert.ToByte(_startB + _bDiff * runningPct);
return(SolidColorBrush.FromArgb(a, r, g, b));
}
