Life Hack: change palette of GIF

1.  Upload your GIF.
2.  Select all the frames.
3.  In the color palette window, load a frame from your GIF.
4.  Click "Original Colors" and then "Get".
5.  Disable "Dithering" in the settings near the "Apply" button.
6.  Adjust the "Filter Colors" scale.
7.  Click "Apply". The this palette is now applied to your GIF.

Fine-Tuning:
*   If a color doesn't match the original, use the "Undo" arrow, then, use the eyedropper to correct that specific color in the palette.

Advanced Coloring:
*   Go to the palette on the left. Any color you change here will update across all selected frames.
*   For even more precision, change the source image in the palette window. This lets you sample new colors accurately with the eyedropper.
*   With the recolor function, you can use a mask to change the color of a specific area (for example, in the video, I changed the color of the twinkling stars from blue to white).
You can also save your custom palette via the "Save" menu.