Modify hover text color

ECaseyC&M

This issue is very apparent with stacked bar charts with dark backgrounds.

Since the backgrounds are dark, the default text color is white. When you hover over a bar, the other categories are grayed out. These colors are too similar and become difficult to read.

I would like an option to change at least the hover color so it is readable. Another alternative would be to introduce a background option to separate the text from the grayed out bars.