static Optional <Color> TryParseColorHex111(string hex)
{
return
(ScalarParser.ParseHex(hex.Substring(0, 1)).SelectMany(r =>
ScalarParser.ParseHex(hex.Substring(1, 1)).SelectMany(g =>
ScalarParser.ParseHex(hex.Substring(2, 1)).Select(b => new Color(r, g, b, 1)))));
}
static Optional <Color> TryParseColorHex2222(string hex)
{
return
(ScalarParser.ParseHex(hex.Substring(0, 2)).SelectMany(r =>
ScalarParser.ParseHex(hex.Substring(2, 2)).SelectMany(g =>
ScalarParser.ParseHex(hex.Substring(4, 2)).SelectMany(b =>
ScalarParser.ParseHex(hex.Substring(6, 2)).Select(a => new Color(r, g, b, a))))));
}
