change various colors with a Gui.Button // switching colors

Questions & Answers
1

i like chage color of a gameObject with Gui menu using one Gui.Button (i know that with one button for color is easy) some how this: 

if (GUI.Button (Rect (150,40,30,20), ">>")) {
    gameObject.Find("figuras").renderer.material.color = Color.blue;

but i like only one button for lots colors maybe six: yellow, blue, red, green, white and black

in my code the buttons only can change for one color i like a diferent color each click

2

Maybe this can work! Tested, works fine!

var colour1 = false;
var colour2 = false;
var colour3 = false;
var colour4 = false;
var colour5 = false;
var colour6 = false;

var show1 = true;
var show2 = false;
var show3 = false;
var show4 = false;
var show5 = false;
var show6 = false;

function OnGUI (){
 if (show1 == true)
{    
if (GUI.Button (Rect (150,40,30,20), ">>"))
    colour1 = true;
if (colour1 == true)
{
    colour6 = false;
    show1 = false;
    gameObject.Find("figuras").renderer.material.color = Color.blue;
    show2 = true;
}
}

 if (show2 == true)
{
if (GUI.Button (Rect (150,40,30,20), ">>"))
    colour2 = true;
if (colour2 == true)
{
    show2 = false;
    colour1 = false;
    gameObject.Find("figuras").renderer.material.color = Color.red;
    show3 = true;
}
}

if (show3 == true)
{
if (GUI.Button (Rect (150,40,30,20), ">>"))
    colour3 = true;
if (colour3 == true)
{
    show3 = false;
    colour2 = false;
    gameObject.Find("figuras").renderer.material.color = Color.yellow;
    show4 = true;
}
}

if (show4 == true)
{
if (GUI.Button (Rect (150,40,30,20), ">>"))
    colour4 = true;
if (colour4 == true)
{
    show4 = false;
    colour3 = false;
    gameObject.Find("figuras").renderer.material.color = Color.green;
    show5 = true;
}
}

if (show5 == true)
{
if (GUI.Button (Rect (150,40,30,20), ">>"))
    colour5 = true;
if (colour5 == true)
{
    show5 = false;
    colour4 = false;
    gameObject.Find("figuras").renderer.material.color = Color.white;
    show6 = true;
}
}

if (show6 == true)
{
if (GUI.Button (Rect (150,40,30,20), ">>"))
    colour6 = true;
if (colour6 == true)
{
    show6 = false;
    colour5 = false;
    gameObject.Find("figuras").renderer.material.color = Color.black;
    show1 = true;
}
}
}
3

I help to make the script shorter:

var btn_Colors=[Color.blue,Color.red,Color.yellow,Color.green,Color.white,Color.black];
var btn_Count:int;

function OnGUI(){

 if (GUI.Button (Rect (150,40,30,20), ">>"))
    btn_Count++;

 if (GUI.Button (Rect (50,40,30,20), "<<"))
    btn_Count--;

 if(btn_Count==btn_Colors.length)
    btn_Count=0;
 else if(btn_Count==-1)
    btn_Count=btn_Colors.length-1;

 gameObject.Find("figuras").renderer.material.color = btn_Colors[btn_Count];

}

If you want any changes in color or add new colors, just edit var btn_Colors. It will save a lot of time than doing it manually. **That's the goal of programming, efficient and flexibility.