Global colours can be created and applied to different objects in your design. If you want to change the colour across your design at a later time, you can simply edit the global colour in the Swatches panel and all objects update with the new colour automatically and simultaneously.
The global colour could be applied as a solid fill, stroke, or a colour used in a gradient fill. They can be made while in RGB, CMYK, HSL, LAB, Greyscale, or Tinting colour modes.
Global colours are added to the currently selected document palette in the Swatches panel. If a document palette does not exist when your document's first global colour is created, a new document palette is automatically created for you in which the colour will be stored. Once created, you can apply the global colour to your design.
Do one of the following:
All objects using the global colour will be updated automatically.