the legends link the color coding to the actual data services
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Answer:
Open Excel's Format Legend pane by right-clicking the legend in a chart and selecting "Format Legend." Click the window's Fill and Line icon, shaped like a paint bucket, followed by "Fill." Click the "Color" drop-down menu to view a list of colors. Click one of those colors, and Excel applies it to the legend instantly. This flexibility gives you the ability to see how different legend colors look in relation to existing chart elements. For instance, if you don't think that green and blue work well together, you might not want to make your legend green if the rest of the chart is blue.
Tweak the Border
Borders help separate components in a document or on a chart. If you'd like to change your legend's border color to make it more noticeable, click the Format Legend's "Border" button and then click "Color" to display a list of colors. Click a color to apply it to the legend's border. If nothing happens when you click a color, click the "Solid Line" radio button to select it. Make the border thicker by typing a larger value the "Width" text box.
Go Beyond Color
Your customization job does not have to end when you alter a legend's color. Click the Format Legend panel's "Effects" icon to reveal special effects you can apply to the legend. For instance, if you'd like the legend to display a glow effect, click the "Glow" option and adjust one of the settings that appear. You can also click the "Border" button and then click the “Type" drop-down menu to select a different border style.
General Charting Tips
Always print your chart to see what it looks like after you change its colors. What you see on-screen may not match what your printer produces on paper. If you discover that your legend colors are too dark, choose a lighter shade that makes it easier for people to read the text. Right-click other chart elements and follow these steps if you’d like to tweak their colors as well. Learn to mix and match effectively by visiting a website that explains color theory, such as Worqx or SensationalColor.com (links in Resources).
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