public void clear() {
    for (int i = 0; i < numberOfLinesInBuffer * numberOfColumnsInBuffer; i++) {
      charBuffer[i] = ' ';
      perCharFonts[i] = DEFAULT_FONT;
      perCharForegroundColor[i] = defaultForegroundColor;
      perCharBackgroundColor[i] = defaultBackgroundColor;
    }
  }
Foreground and background color for each character.
java/zylib/src/main/java/com/google/security/zynamics/zylib/gui/CodeDisplay/FormattedCharacterBuffer.java