Fixes Color.ToString() return incorrect

[mee-ironsoftware]

Some value will return 1 digit instead of 2.

Eg.

Color color = Color.FromArgb(0, 64, 244, 208);
color.ToString(); // Should be #0040F4D0

[mee-ironsoftware]

return new Color(argb.ToString("X")); should be return new Color(argb.ToString("X2")); too?

Don't need X2 format for converting 32-bit ARGB into color code. But found another bug on IronSoftware.Drawing.Color.FromArgb with RGB code to 32-Bit ARGB, Alpha should be 0 instead of 255.

Eg.

Int32 iColorCode = Convert.ToInt32("1e81b0", 16);
// This will produce A=0, R=30, G=129, and B=176
System.Drawing.Color drawingColor = System.Drawing.Color.FromArgb(iColorCode);
// For IronDrawing should produce the same
// Before fixes this produce A=255, R=30, G=129, and B=176
IronSoftware.Drawing.Color ironColor = IronSoftware.Drawing.Color.FromArgb(iColorCode);