Customize Legend Formatting for Perfect Presentation of Totals on Stacked Charts

Problem: We have users who want to see totals of Stacked Totals on Column Charts.

Partial Solution: Create a Stacked and Line Column Chart
>> format the line chart to have 0 (zero) width but present the data label

Issue: If lets say the line chart is total sales, then total sales will show up in the Legend which is not desirable

Suggested Idea: Can we edit the legend format so that in this case I could have changed the text color of the legend of the line chart to white so that it would not appear.