Today I learned how to save and load swatch libraries in multiple .AI files.
Swatch and learn:
Create a color swatch. If you’d like to be organized, save them in “Color Groups,” which are indicated with a folder icon.
Find the swatch drop-down menu and select, “Save Swatch Library as AI…”. Give your swatch library a name.
Open a new file and select, “Open Swatch Library” and where your User-Defined Swatch Library will be.
Boom—there ya have it. Your swatches can be now be used across any AI file when repeating this process.