To Configure Text Height and Color for Balloons (AutoCAD Mechanical Toolset)

At the Command prompt, enter AMOPTIONS.
In the Options dialog box, click the AM:Standards tab.
In the Standard Elements list, double-click Balloon. The BOM Settings dialog box appears.
In the Default style section, click . The Balloon Settings dialog box appears.
To change the text height, in the Text Section, in the Height list, select the text height.
Note: To derive the text height from the master text settings automatically, select the text height marked “By NameOfCurrentDraftingStandard.
To change the text color, in the Text Section, in the Color list, select the color.
Click OK until all dialog boxes close.