You can view the whole colour file page within the window at a reduced or enlarged scale by using keyboard shortcuts.

Zooming into a colour file

Use the keyboard shortcut ⌘=

Zooming out of a colour file

Use the keyboard shortcut ⌘-

Scrolling the colour file

Use the arrow keys to move up, down and across the colour chips within the colour file.

Use the scroll bars at the bottom and on the right hand side of the colour file window.