private void CalculateColor(Point p)
{
HsvColor hsv = new HsvColor(360 - _spectrumSlider.Value, 1, 1)
{
S = p.X,
V = 1 - p.Y
};
var currentColor = ColorUtilities.ConvertHsvToRgb(hsv.H, hsv.S, hsv.V);
currentColor.A = A;
SelectedColor = currentColor;
string newColor = ColorUtilities.GetFormatedColorString(SelectedColor, UsingAlphaChannel);
SetHexadecimalStringProperty(newColor, false);
}