If you’re using a Mac, go to Illustrator CC > Preferences > User Interface.
If you’re using a Mac, go to Illustrator CC > Preferences > User Interface.
These settings will not affect any artwork in the drawing space. Any colors picked here will not print out of you print your project.
When you’re finished, the final color will appear in a swatch in the lower-left corner of the dialog box.
Any objects with fill or line colors, including white, that are not the same as the background will be visible. Instead of changing the transparent grid colors, you can create a large rectangle that’s the same size of your artboard, then change the fill color of that shape.