Royal Blue

Royal blue is one of the darker shades of blue, like all "royal" shades.  It is important to specify that this color is blue because there are royal shades of other colors.

Royal blue is dark, but not as much as navy and is not similar to black.  It is very deep and is one of my favorite shades of blue.

Lime

Lime is a particularly famous and bright shade of green.  It is very similar to yellow-green, though a little greener, and is almost as bright as neon green.
Lime is popular among children, but as neon colors aren't really appreciated by adults, it is not found often in clothing or other accessories, also because it is so bright.

Amber

Amber is a shade of yellow considerably darker than bright yellow or traditional yellow.  Since it's darker, it's easier to read, making it a smarter choice for writing or drawing.
Amber is close to the color of the jewel amber, giving it its name.  It has a little bit of orange in it, helping to make the darker color.  Amber is one of the nicest colors of yellow in fancy clothing because it isn't obnoxiously bright.