Surface coloring method of magnesium alloy article and magnesium alloy article with colored surface

A surface coloring method of a magnesium alloy article, comprising:

• providing a magnesium alloy article;
• performing an anodizing treatment on the magnesium alloy article to form an anodized layer on an outer surface of the magnesium alloy article, wherein the anodized layer has a plurality of pores extending toward the outer surface of the magnesium alloy article;
• performing an etching treatment on the anodized layer to form a plurality of pits on a surface of the anodized layer that is distant from the magnesium alloy article, wherein each of the plurality of pits is in spatial communication with at least one of the plurality of pores;
• and
• performing a sealing treatment on the anodized layer after the etching treatment;
• wherein the sealing treatment is to cover the surface of the anodized layer with a sealing layer through electrical hole-sealing, so as to seal the plurality of pores, and the sealing layer is formed from a resin composition including an acrylic resin and a solid powder, the solid powder is a powder of a metal, a non-metal, or an oxide of the metal or non-metal.