Use Add Color
in the pop-up palette to add a new thread color to the palette and set it as the draw color.
You can also add a color when selecting colors in the Design panel. See Add Color.
Add a Color to the Pop-up Palette
In the pop-up palette, click Add Color
and the Color Selection dialog appears.
Select the desired thread color.
Click OK to close the dialog.
The color is added to the end of the palette and is selected for drawing.