Style manager allows user to manipulate a component inner properties. By default, Editors current selection is the body or the white canvas, so when Style Manager will be selected there aren't much properties except for the decoration tab.
However, when a user tries to check other components say the navbar, it seems to have more properties compared to the body? That's because the more complex the component gets designed, the more balance it needed to compensate for control in the overall layout.
This will be discussed in the following sections. But for now:
Step 1 - To use style manager simply select components you want to see its properties.
Step 2 - Click the brush icon on the uppermost part of the editor.
Step 3 - Once click the purple color usually indicates the tool is already activated and the properties will now appear relative to its component.