I have a chart that has both positive and negative values. I would like to conditionally format the color of the negative value titles on the vertical axis. Is this possible to do in the Excel line charts?
Assuming that by "value titles on the vertical axis", you mean the tick labels (numbers) on the Y axis, then the answer is "Yes". You can set the "Number format" of the chart's Y axis to use colours for negative numbers. The following instructions are for Excel 2016. The method may be slightly different for other versions.
- Right-click on the chart's Y axis.
- Choose "Format Axis ..." from the context menu.
- In the "Number" section, select the "Custom" category.
- Set the Format Code for to include colours for negative (and/or positive) numbers as you would for any cell.
- Click "add".
Here is an example that show negative numbers in red.