Thanx Mate !

Since I am having problems running Processing I have modified some of the code  so that it will run in both Processing and Eclipse.

I have had to change color >> int and # >> 0xFF which is normally done by Processing's pre-processor

other changes include changing Theme1 to theme1 because by convention variable names start with a lowercase letter and I have started the numbering with theme0 to match the array element index number. Array indices always start at zero.

Like tfguy44 it uses a 2D array.

1. int[][] schemes;
2. int[] currentScheme;
3. 
   
4. public void setup(){
5.     size(300,300);
6.     int[] theme0 = { 
7.             0xFF1F3C57, 0xFF427283, 0xFFF5D6B8, 0xFFC0997F, 0xFF90372B
8.     };
9.     int[] theme1 = { 
10.             0xFF272618, 0xFF46533E, 0xFF5E6423, 0xFFFBFCC6, 0xFF364742
11.     };
12.     int[] theme2 = { 
13.             0xFF223740, 0xFF537367, 0xFFA1A681, 0xFFD9B779, 0xFF8C6D46
14.     };
15.     int[] theme3 = { 
16.             0xFFC74029, 0xFFFAE8CD, 0xFF128085, 0xFF385052, 0xFFF0AD44
17.     };
18.     schemes = new int[][] {theme0, theme1, theme2, theme3 };
19.    
20.     background(255);
21.     noStroke();
22.     for(int i = 0; i < schemes.length; i++){
23.         // Set the scheme to use
24.         currentScheme = schemes[i];
25.         // draw a box for each color in the scheme
26.         for(int j = 0; j < currentScheme.length; j++){
27.            
28.             fill(currentScheme[j]);
29.             rect(10 + j * 30, 10 + i * 30, 26, 20);
30.         }
31.     }
32. }

A random scheme can be selected with

1. currentScheme = schemes[(int)random(schemes.length)];

HTH

Thanx for the help ! I just got the idea ...

> I've Also changed that [0] to [int(random(1,5))] to select randomly in each palette .

the range is wrong here. index for a 5 element array can be 0 to 4. (int)random(0, 5) is better. (max value is exclusive, you won't ever get 5 from that)

(int)random(5); will also work and is shorter.