public class Class
{
public static int ToInt(this string _int)
{
if (_int == string.Empty) return 0;
return Convert.ToInt32(_int);
}
} public class Class
{
public static int ToInt(this string _int)
{
if (_int == string.Empty) return 0;
return Convert.ToInt32(_int);
}
}

Color c = Color.FromArgb(83,97,98,1);btn.BackColor = c;