You can edit any color scheme that you create. You cannot edit the original SURFCAM color schemes.
This example shows how to change the color of a surface arrow, which is blue in the following picture.

1. From the menus, click Tools > Options.
2. Click Colors > System.
3. Select a Color Scheme that you created (optional).
4. Click Surface Arrow from the list, then choose a color to the right.
5. Click the Save button.
6. Click the OK button to exit the Options dialog and apply the change.