Working with colors

2. How can I change the color of the arrows that appear next to a menu button from black to something else?

Right-click on a folder and select TLB Settings>Skins>Check Use custom colors>Menu Text Color
This will make the arrows the same color as the menu text item.

I guess that I wasn't specific enough. The change you recommended will change the arrow that points to the right on a menu item to enable you to display the sub-menu. That's not what I want to change. What I'm trying to change is the arrow that points down that is located to the right of the button on the toolbar itself when no menu is being displayed.