AndyTheAnimal,
What about creating a chart template with your custom set up and then change your pivot table chart type to your custom template:
1.
Click the chart that you want to save as a template.
2.
On the Design tab, in the Type group, click Save as Template.
3.
In the File name box, type a name for the template.
Tip Unless you specify a different folder, the template file (.crtx) will be saved in the Charts folder, and the template becomes available under Templates in both the Insert Chart dialog box (Insert tab, Charts group, Dialog Box Launcher ) and the Change
Chart Type dialog box (Design tab, Type group, Change Chart Type).
Note A chart template contains chart formatting and stores the colors that are in use when you save the chart as a template. When you use a chart template to create a chart in another workbook, the new chart uses the colors of the chart template — not the
colors of the document theme that is currently applied to the workbook. To use the document theme colors instead of the chart template colors, right-click the chart area, and then click Reset to Match Style.