To add a heatmap as a background to your graph using Graph Builder's graphical user interface:
1. From the red triangle menu, select 'Show Control Panel'.
2. Shift-click the Heatmap button.
3. Right-click in the plot area, select 'Heatmap', then 'Move Backward'. Do this step twice.
4. Click the 'Action' column in the Control Panel's columns list, then click the Color.
5. In the left side control panel, 'Heatmap' should be listed below the columns list.
6. Click the triangle to the right of the word 'Variables' under 'Heatmap'.
7. Uncheck the boxes to the left of 'Week' and 'Y Performance'.
8. Click the triangle to the right of the word 'Variables' under 'Points'.
9. Uncheck the box to the left of 'Color Action'.
10. Click the triangle to the right of the word 'Variables' under 'Line'.
11. Uncheck the box to the left of 'Color Action'.
At this point the heatmap should look like dark vertical bars behind your original plot as shown in the image below. The remaining steps will adjust the heatmap colors.
Adjusting the heatmap colors:
12. Right-click on the color gradient in the legend on the right and select 'Gradient...'.
13. In the 'Gradient Settings' dialog, right-click on the color gradient to the right of 'Color Theme'.
14. In the 'Continuous Color Themes' dialog, click on the triangle to the left of 'Custom Color Theme'.
15. Click the 'New' button.
16. Click the blue slider on the left under the gradient, then click on the red rectangle under 'Basic Colors' in the 'Color' dialog, then click 'OK'.
17. Click the gray slider in the middle under the gradient, then click on a dark blue rectangle under 'Basic Colors' in the 'Color' dialog, then click 'OK'.
18. Click on the gradient between the red and blue sliders to add another slider.
19. Click the new slider in the middle under the gradient, then click on a dark blue rectangle under 'Basic Colors' in the 'Color' dialog, then click 'OK'.
20. Click the 'Space Evenly' button.
21. Optional step: In case you may want to use this new color theme again, change the color theme name in the white box under Custom Color Theme' and click 'Save'.
22. Click 'OK' to return back to the 'Gradient Settings' dialog.
23. Click the box to the left of 'Discrete Colors', then click 'OK' to close the 'Gradient Settings' dialog.
24. Right-click on the color gradient in the legend on the right and select 'Transparency...'.
25. Enter 0.1 for the transparency value and click 'OK'
26. The graph should look good now. Click 'Done' to close Graph Builder's Control Panel.