Navigate to Setup → Options → [TH] Nodes.
Open ‘Post thread’ in overlay - If enabled, when the 'Post thread' icon in the node grid footer is clicked by a user it will open in an overlay. Otherwise, the user will be redirected to the appropriate page.
Number of custom colors - For advanced styling, you can add one or more custom colors to your nodes, which are accessible as CSS variables.
When increasing the number of custom colors, that will add that number of custom colors to each node in Node layout and styling. Same happens when decreasing the number of custom colors. Either way, this will add custom color properties to categories, forums, link forums and more.
To see this in action, view the video below.