How can I color the node collapse and expand icons in the Gantt Chart task list?

FNC TMS FNC Gantt Chart
1

If you have a dark background, the collapse and expand icons will dissapear?
How can I color the node collapse and expand icons in the Gantt Chart task list?

2

For the moment this is possible by adding a new icon to the expand and collapse icon property in TaskListAppearance.
(This is already done in the Appearance demo of TMS FNC Gantt Chart if you want a light version.)
We are checking if it isn't confusing to add a ExpandIconSVGFillColor, as this will only work on basic SVGs. But it would indeed be a quick help for the default icons.