Make the bar yours

Reorder the toolbar, choose what sits in More, and pick an accent colour.

The Customize view (the sliders button at the top right of the side panel) shows the toolbar as it is, with the More menu behind it and the buttons that are not shown.

Drag a button to where it should go, or select it to see what it does and move it with the buttons under the preview.
With the keyboard, the arrow keys choose a button and Shift⇧ with the arrow keys moves it.
A button that is not shown keeps its key. The toolbar changes at once on every tab where Nitpique is on.
Reset toolbar brings back the original layout.

Two things always stay: Turn off is on the toolbar, and Settings is on the toolbar or in More, so you can always turn Nitpique off and change the toolbar back. The More button goes away while the menu is empty. To change a key, see Change a key.

Customize also holds the Accent colour: Blue (the default), Violet, Teal, Green, Orange, Pink or Graphite. It colours what is selected and active in the panel and on the toolbar. Every accent passes the contrast rules in light and dark. The measurement colours on the page do not change.

Questions

Can I hide a button and still use its key?

Yes. A button that is not shown keeps its key.

Can I lock myself out by removing buttons?

No. Turn off always stays on the toolbar, and Settings stays on the toolbar or in More. Reset toolbar brings back the original layout.

Does the accent colour change the measurements?

No. It colours what is selected and active in the panel and on the toolbar; the measurement colours on the page do not change.