Highlight tables and heatmaps help people to read the information more effectively because the texts stand out with different colors. On the photo is a simple example of superstore table with 4 measures (Discount, Profit, Quantity and Sales) for each state.
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However, sometimes it is not best practice to have only one color legend for all your measure values, because the numbers are on different scales. This blog show you a one-minute-trick to separate the color legends for measure values.
On Marks Card, click on Colors for Measure Values (see photo). Choose Use Separate Legends.
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Now note that you have now 4 separated color legends on the right hand side. Change the colors the way you wanted it to be.
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And done! Now you have seperated color legends!