Hey there! I can definitely help you with that. Excel has a feature that allows you to save your frequently used colors as Recent Colors. Here's how you can do it:

1. Open Excel and click on the "Home" tab.
2. Click on the "Font Color" or "Fill Color" button (depending on whether you want to save a font or fill color).
3. Click on the "More Colors" button at the bottom of the color palette.
4. In the "Colors" tab, select the color you want to save as a Recent Color.
5. Click on the "Add to Custom Colors" button.
6. The color will now appear in the "Custom Colors" tab. Click on the "OK" button to close the "Colors" window.
7. Now, whenever you click on the "Font Color" or "Fill Color" button, your Recent Colors will appear at the top of the color palette.

If you want to change the standard color palette, you can do so by following these steps:

1. Open Excel and click on the "File" tab.
2. Click on "Options" at the bottom of the left-hand menu.
3. Click on "General" in the left-hand menu.
4. Scroll down to the "Color" section and click on the "Color Scheme" dropdown menu.
5. Select the color scheme you want to use.
6. Click on the "OK" button to save your changes.