Here's a quick guide to help you change the starting palette in Trycolors.com:

1. Go to the mixer page

2. Click on the "gear" button located near the colored circles on the left-hand side of the screen.

3. This will open up a modal where you can change your starting palette. Here you will see three pre-built palettes that you can choose from or you can create your own custom palette.

4. To select a palette, simply click the "switch" button located next to the name of each palette.

5. If you want to create your own custom palette, click on the "+ New" button and select the colors you want to include in your palette.

That's it! You can now change your starting palette in Trycolors using these simple steps. Have fun exploring the different color options and creating beautiful colors!