Function            set_color - set the default attribute (color)

  Syntax              void set_color(byte colors);

  Prototype in        video.h

  Remarks             set_color just sets the global variable
                      char_attribute to colors. I got tired of declaring
                      char_attribute as extern in every function that
                      output to the screen, so I made this function.

  Return value        nothing.

  See also            putk(), putstr()

  Example             #include <video.h>
                      #include <color.h>

                      main()
                      {
                           set_color(RED | B_WHITE | BLINK);
                           /* red blinking text on white background */
                           gotoxy(12,40);
                           putstr((byte *)"Hello");
                      }