Using Three sliders (RGB) to change the sea color

How can I change the color of the sea using color picker or three sliders, one for Read color, one for Green, and one for Blue color please? I am using Water4Example (Advanced).

Using GUI Sliders changing a variable, setting Colour components.
Ensure to define all variables correctly as this has not been done in the sample below

public static void SetColour (this Material material, float value) {
    Color color = material.color;
    color.a = value;
    color.r = redslidervalue;
    color.g = greenslidervalue;
    color.b = blueslidervalue;
    material.color = color;
}

*Original Code Modified from here (Credit: Jessy)