A digital control device is then used to programme the desired colour on to the nails. This includes a camera which can capture the colour of any surface which is then reproduced on the nails.

一个数字控制装置主要用于将想要的颜色添加到指甲上，它包括一个照相机，可以捕捉到任何表面的颜色，然后将这些颜色复制到指甲上。

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Dr Wilson continues: "There are about 20 genes [from a total of about 20, 000] known to control skin and eye colour."

Wilson博士说：“已知大约有20种基因(人体一共大概有20000基因)控制肤色和眼睛的颜色。”

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While not strictly necessary, a parallel light is also applied to the "stereo" layer, this provides additional control over brightness and even can apply colour (mood) effects.

当要求不是很严格时，一组平行光也可以加到“立体”层，这提供了额外的光照控制甚至可以加入颜色(气氛)效果。

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Engineers could control which bits of the eyes were illuminated in a specific colour, to make the toy appear as if it was rolling its eyeballs, blinking, or showing two small throbbing hearts.

BBC: Disney develops 3D-printed lighting for toys