Color.cs

public static Vector4 HSVToRGB(float hue, float saturation, float value, float alpha)
{
	Func<float, float> helper = (x) =>
	{
		float lowerBound = value * (1 - saturation);
		float delta = value - lowerBound;
		while (x < 0) x += 360;
		x = x % 360;
		return lowerBound + (float)((Math.Floor(x / 180) * value) + Math.Floor(((Math.Floor(x / 60) % 3) / 2)) * (x % 60) * (delta / 60F) * Math.Pow(-1, Math.Floor(x / 180)));
	};

	return new Vector4(helper(hue - 120), helper(360 - hue), helper(hue), alpha);
}