With the bottom of the projection of a white transparent container filled with water, then drip in the water the color ink or oil-based paint.

用一个装满水的白色透明容器的投影的底部，然后在水面点滴彩墨或油基的颜料。

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Düfa is a water-based paint brand invented by Meffert AG Farbwerke in 1955.

德国都芳漆是德国梅菲特工业集团于1955年创立的环保水性漆品牌。

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The lead based paint might protect it from radiation too!

表面那层漆可能也可以保护（吸收）雷达波！

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A new study shows that lead-based paint remains a worldwide threat to public health.

VOA: special.2009.08.31

He and his team are calling for a worldwide ban on lead-based paint.

VOA: special.2009.08.31

Its roots go back to 1998, when Ron Motley, a South Carolina lawyer and veteran of the tobacco settlements, met state attorneys-general and identified lead-based paint as a promising area for public litigation.

ECONOMIST: Environmental risks

The crime waves that afflicted many parts of the world and then, against all predictions, collapsed, were ascribed, in an article published by Mother Jones last week, to the rise and fall in the use of lead-based paint and leaded petrol.

FORBES: The Problem For The Left If Tetraethyl Lead Really Does Cause Crime

Though still classic in design (some have two and three heads to make veins and layers), the length and type of hair for the brushes have been changed to accommodate water-based paint, which the industry has embraced in place of oil-based paint.

WSJ: An Artisan Who Can Turn Paint into Stone | Creating