Does the color of the house make a difference? My house is dark brown and just wondering how well this will show up.

Green is the color that our eyes see the best. It should still show up reasonably on a brown house. It will not be the same as on a lighter colored surface, but it should still work as long as there is not too much light from other sources such as a street light. The red however will probably wash out and not be very visible as the two colors are too close in tint.

Just like how a flashlight will reflect less on a dark color versus a light color.

 

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