Why does allegra d 12 hour have a brown layer but the 24 hr allegra d doesnt whats the difference in the colors?
The drug is ethnic specific. Brown for brown skin. :)
The difference between a brown egg and a white egg is... ...that a brown egg is laid by a reddish-brown hen with reddish-brown ear lobes, and a white egg is laid by a hen with white feathers and white ear lobes. Then again this is not necessarily always true! Check out www.backyardchickens.com/ for the actual breeds that lay each color. There are also more colors or variations.
If you mix all the primary colors, red, blue, and yellow, you get brown; if you mix two secondary colors, green and orange, you get brown, and you can also get brown if you just mix any large number of different colors together; such mixtures will always eventually tend toward brown, and in addition, you can get a type of brown by mixing red and black.