Margot in Nautical Flags. French names have similar origins to those of other old-world European nations. They are often derivations of place names or trade names, or have their basis in history, mythology, religion or nature. They may also be created names.
Umber is not one precise color, but a range of different colors, from medium to dark, from yellowish to reddish to grayish. The color of the natural earth depends upon the amount of iron oxide and manganese in the clay.
As of Minecraft 1.8 update you can color the light of a Beacon putting Stained Glass or Stained Glass Pane over it. Also, you can mix the colors (for example, if a red stained glass is placed over it, and then a blue one over that, the light will have a purplish color).