added describe to directional light and color variable example

Author: yogitheboss

content/examples/Basics/Color/ColorVariables/ColorVariables.pde

@@ -5,6 +5,9 @@
  * in the program by a name, rather than a number. 
  */
 
+
+describe('There are two sets of squares. The first set contains three squares of varying sizes stacked together. The color of the smallest square is orange, the color of the middle square is gold, and the color of the biggest square is brown.  On the right of the first set is the second set, which is similar to the first. The only difference here is the color of the squares; the smallest square is gold, the middle square is brown, and the biggest square is orange.') 
+
 size(640, 360);
 noStroke();
 background(51, 0, 0);

content/examples/Basics/Lights/Directional/Directional.pde

@@ -8,7 +8,11 @@
  * scatters in all directions. 
  */
 
+
 void setup() {
+  
+describe('there are two dark spheres side by side ,the cursor works like a light source ,when mouse moves the direction of light changes and reveals some part of spheres.')
+
   size(640, 360, P3D);
   noStroke();
   fill(204);