For this 3 ways you reach.
If both the header and footer are in different sections than the data, then go to the section, right-click on the formation, specify the color. Check this link
http://www.codeproject.com/Questions/56657/change-back-color-of-crystal-report
http://scn.sap.com/thread/1883125
Drag and move the crystal report field (such as a label) to the full length of the line. Select the color by clicking Right click -> format object -> color . Now the header / footer field, which works as a column / summary, goes beyond that above the field.
You can give color to all objects, and also not give a gap between them.
Step to color the object.
1. Select the items that you want to change, and select select Format, then select Format Text. 2. The Format Editor dialog box appears. 3. Select the Font tab. 4. Select the appropriate font, style, size, and color.
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