Mixed Race (Mixed Skin Tone)

In 3D Fluency, every icon with two or more individuals should have a full mix with every other skin tone. Every female-male icon should have Female Skin Tone 1 in front, and then Male Skin Tone 1 in back, then Male Skin Tone 2 in back, Male Skin Tone 3, etc ... Then Female Skin Tone 2 in front, and repeat. And the same with Male Skin Tone 1 in front ... You can use the existing icons, just make additional new icons.