fn RGB(comptime hexspec : [7] const u8) error{NoHash}!Color
{
    if(hexspec[0] != '#')
        return error.NoHash;
    return Color {
        .R = (try std.fmt.charToDigit(hexspec[1]) << 4) | try std.fmt.charToDigit(hexspec[2]),
        .G = (try std.fmt.charToDigit(hexspec[3]) << 4) | try std.fmt.charToDigit(hexspec[4]),
        .B = (try std.fmt.charToDigit(hexspec[5]) << 4) | try std.fmt.charToDigit(hexspec[6]),
    };
}