How to Use the Eyedropper Tool outside Illustrator and Photoshop.
To avoid these white lines/borders in your vector pattern after exporting, do the following:
1
Select the “Eyedropper Tool”.
2
Press and hold inside Illustrator.
3
Drag from inside Illustrator to outside Illustrator until the mouse is on the color you want.
4
Release the mouse.
5
You’ll see the picked-up color immediately in the Swatch Panel.