Coloring structure having reflecting and interfering functions

A coloring structure for generating a color having a wave length in a visible light spectrum by reflecting and interfering actions of a natural light, comprising:

• a plurality of first substance layers comprising a first material, each of said first substance layers having an optical refractive index n.sub.1 which is at least 1.3;
• and
• a plurality of second substance layers comprising a second material, each of said second substance layers having an optical refractive index n.sub.b and overlying a respective one of said first substance layers,
• said optical refractive index n.sub.b of said second substance layers being greater than said optical refractive index n.sub.a of said first substance layers by an amount in the range of 10% to 40%;
• said first and second layers alternating with one another.

A coloring structure for generating a color having a wave length in a visible light spectrum by reflecting and interfering actions of a natural light, comprising:

• a plurality of layers of first and second materials for reflecting natural light to generate the color, wherein
• each of said plurality of layers of said first material has an optical refractive index n.sub.a which is at least 1-3;
• and
• each of said plurality layers of said second material has an optical refractive index n.sub.b and overlies a respective one of said layers of said first material,
• said optical refractive index n.sub.b of said layers of said second material being greater than said optical refractive index n.sub.a of said layers of said first material by an amount in the range of 10% to 40%;
• said first and second layers alternating with one another.