Unfortunately, the functionality to have the bars in the graph color coded automatically, according to the number of defects per module isn't available in ALM. You can however, color code the bars in the graph manually. After you have created the bar graph, click the 'Set Graph Appearance' button in the toolbar above the bar graph, and the 'Graph Appearance' window displays. Click the 'Appearance' tab, and in that tab, you will be able to select the group color for the numbers in the bar graph. Click the drop down arrow in the 'Group Color' field, and select each number from the list that displays. After you have selected the number, click the colored square to the right of the field, and the 'Color' window displays. In the 'Color' window, select the color you wish to use for that number. You can do this for all the bars displayed in the graph.