static public RGBA FromHexa(string hexa)
{
string value = hexa;
if (value.StartsWith("#"))
{
value = value.Substr(1);
}
if (value.Length == 3)
{
value = $"{value[0]}{value[0]}{value[1]}{value[1]}{value[2]}{value[2]}FF";
}
if (value.Length == 4)
{
value = $"{value[0]}{value[0]}{value[1]}{value[1]}{value[2]}{value[2]}{value[3]}{value[3]}";
}
if (value.Length == 6)
{
value += "FF";
}
byte r = Externals.NumberToByte("0x" + value.Substring(0, 2));
byte g = Externals.NumberToByte("0x" + value.Substring(2, 2));
byte b = Externals.NumberToByte("0x" + value.Substring(4, 2));
byte a = Externals.NumberToByte("0x" + value.Substring(6, 2));
return(FromRGB(r, g, b, a));
}