Arrays and the inspector

Dear community,

I've got a question related to initialize arrays through the script so that they already have the values in the inspector before the game launches. (Aka: You can edit them on the spot, in the inspector.)

Now, when I read the question I don't understand myself what I'm exactly asking, so allow me to elaborate my question, lets say we got this piece of code:

 // Lots of other code
 var tileSignal : int = 5;
 // Lots of more code

Now, if I would assign this script to a new Gameobject, it would automatically get the value 5 in the inspector.

However, when the variable is an array, I can't seem to be able to initialize it through the script, for example:

 // Some strange code above
 var arrayPosZ : float[];
 // Lots of code below

I can't find a way to initialize this the same way as the non-array variable (everything that I've tried gives me errors), so that they are prefilled in the inspector when I attach the script to a new gameobject.

To be more specific, I currently got the following code, and use the Start function to make sure it is applied to all the gameobjects. However, this approach causes the inspector to be completely overridden and by doing so I can't add any "individual values" to gameobjects. I currently use the following code:

 // How to initialize this color array?
 //         >> Currently doing it in Start, so the black colors in the inspector... Will be overridden.
 var tileColors : Color[] = new Color[4];
 
 // What are our orders from our superiors? (Aka: What color will we become, or will we deselect?)
 //        >> If 4 is given as order, it means deselect. 
 var tileSignal : int = 5;
 
 function Start () {
 
 // Initializing color array.
 tileColors[0] = new Color(0.2,0.6,1.0,1.0); // Light Blue, means moveable.
 tileColors[1] = new Color(1.0,0.4,0.4,1.0); // Light Red, we got an enemy upahead.
 tileColors[2] = new Color(0.4,1.0,0.4,1.0); // Light Green, our allies are nearby.
 tileColors[3] = new Color(1.0,1.0,1.0,1.0); // Default Color, this is either white or black (depending on where the Tile is)
 
 }

All in all, my question could be phrased as the following: How do I prefil arrays like I did with the non-array integer? And in more specific, with colors.

Lots of thanks in advance, Lots of love too,

Jip & my little nephew Yue who made this really hard to type.