Fujitsu Ten ECLIPSE OWNER'S MANUAL / CD3200
You can change the button illumination color in the following way.
Press the [SELECT] (Up/Down) button to select Illumination.
Press the [ENTER] button.
The illumination setting mode is activated.
Press the [SELECT] (Up/Down) button.
Press the [SELECT] (Up/Down) button to set illumination color as follows:
Blue/Red ↔ Blue/Green ↔ Blue/Amber ↔ All Red ↔ All Green ↔ All Amber ↔ Blue/Red ↔···
Press the [ENTER] button.
The selected settings will take effect.