Furuno GP-3500F - Manual (Page 194)

11. VIDEO SOUNDER OPERATION
11-22
11.10 Display Colors
You can select the number of colors and background color to use as follows:
1. Press the [MENU] key to show the main menu.
2. Press the [9] key to show the ECHO SOUNDER SETUP menu.
3. Press the [5] key to show the HUE window.
HUE
1
Hue window
4. Rotate the [ENTER] knob to select hue number, referring to the table below.
(You can see the result of your selection on the display.)
Hue no. and background and echo colors
Hue No. Echo color Background color
0 USER COLOR on the USER COLOR
SETUP menu (See paragraph 11.11.)
1 16 Blue
2 8 Blue
3 16 Blue
4 8 Dark blue
5 16 White
6 8 White
7 16 Black
8 8 Black
9 Monochrome, 8 colors
5. Press the [ENTER] knob.
6. Press the [MENU] key several times to close the menu.