Multi button popup info

Task:
a : for mobile device ( MouseDown, MouseUp etc limit the Update events)
b : every button (white/blue) toggle color and pop-up menu (same plane different texture )
c : only one button can be active at a time default position no active buttons
d : no other buttons for toggle info off and on!!
e : adjustable for different count of a button

Task A and B is so simple that it hurts but the rest is killing me ;(.
I solve A and B many different ways but last it looks like this:
- every button has C# that toggle bool in one C# script "Button_List" with Update(only one update for this taks) .
- Button_List(C#) do the rest ; if BtnA=true , set active "info_Container" change texture to InfoA. If BtnA=false hide "info_Container" . I do not have to change back texture because another button load different one so this is OK, but i can press many buttons after a while its mess

Array of bools looks promising but If every button is a toggle i can't make eg: MouseDown set array = false , MouseUp set BtnA true. This is good solution and I have only one Btn On, but I cant set this one to false by toggle because on MouseDown all are false so one is always active.

My brain melts

 

To hard or to easy to respond??

 

ok mayby i help

Now the code check of I click on buton with value i=0 and only that one is toggle rest of them turn blue and false when i change buton but no toggle ;(.

I need some function if i== button that is true then toggle if i click other one then turn off them all and only turn on this one.

Code (CSharp):

1. void OnMouseDown ()
2.     {      
3.         GameObject[] buttons = GameObject.FindGameObjectsWithTag("Info_buttons");  
4.         for(var i=0; i<buttons.Length; i++){          
5.      
6.             if(i!=0){
7.              
8.                 buttons[i].GetComponent<InfoBTN>().Press = false;
9.                 buttons[i].renderer.material.color =  Color.blue;      
10.              
11.             }
12.          
13.         }              
14.      
15.     }
16. void OnMouseUp ()
17.   {  
18.  
19.    
20.      if(gameObject.name=="Btn01"){
21.        Press = !Press;
22.        if(Press){
23.          Btn01.renderer.material.color =  Color.red;
24.        
25.        }
26.        if( !Press){
27.          Btn01.renderer.material.color =  Color.white;
28.        
29.        }
30. }