Let’s say we have conducted a survey and have selected five sets of colours. Create a table called Colour in your data model which might look like this

I have copied the hex colours for each set of colours and entered them into the columns Hex1 and Hex2. Make sure to sort the column ColourScheme by the Order column

Using the adventureworks model we will define a variance measure. I want to plot the variance by countries and wanted countries with positive and negative variances hence chose an arbitrary number of 4000000 to achieve this

Variance =
[TotalSalesAmount] – 4000000

Next we will define the colour scheme measure by using the Colour table and the above measure

VarianceColourScheme =
VAR SelectedColour =
    SELECTEDVALUE ( Colour[ColourScheme] )
VAR Hex1Colour =
    VALUES ( Colour[Hex1] )
VAR Hex2Colour =
    VALUES ( Colour[Hex2] )
RETURN
    SWITCH (
        TRUE,
        [variance] > 5000000, Hex1Colour,
        [variance] < 5000000, Hex2Colour
    )

Basically if the variance is positive use a colour usually associated with positive differences (Hex1) else chose the other option (Hex2)

Next create a stacked bar chart and drag SalesTerritoryCountry into Axis and Variance into Value

With the chart selected, in the Format pane go to Data Colour and use the … to select Conditional Formatting and use the following option

Next create a Slicer and drag ColourScheme column from the Colour table into it and make it single select

You can now select a colour scheme and watch how the colours change in the chart.

With a bit of work you can set this up for all the charts in your reports and have the slicer in the front page of your report so that the users can select the colour scheme of their choice