public static String attrib(final int attr) {
      return ESC + "[" + attr + "m";
    }
Sets the character attribute. It will be one of the following character attributes:

<pre>
Text attributes
   0    All attributes off
   1    Bold on
   4    Underscore (on monochrome display adapter only)
   5    Blink on
   7    Reverse video on
   8    Concealed on

  Foreground colors
   30    Black
   31    Red
   32    Green
   33    Yellow
   34    Blue
   35    Magenta
   36    Cyan
   37    White

  Background colors
   40    Black
   41    Red
   42    Green
   43    Yellow
   44    Blue
   45    Magenta
   46    Cyan
   47    White
</pre>

The attributes remain in effect until the next attribute command is sent.
geode-gfsh/src/main/java/org/apache/geode/management/internal/cli/shell/jline/ANSIBuffer.java