Hi there, I have a problem here which i am sure is quite simple to some of you.The basic premise of the problem is this : I have 5 colors in an array, when mouse is pressed it will draw a rect with color[0], the next click will draw a rect with color[1] etc.
I'm not so familiar to arrays and am unsure on the exact syntax to push through the array and move onto the next value when needed.
I apologize if this is posted somewhere else on the forum but I have unable to find it. I'd really appreciate any help.

actually to modify the index of the array which is called every time the mouse is pressed you should declare an int variable which increases every time the mouse is pressed.

this way [i will only write the portions of code which are relevant for you to get the big picture; this example will not work if you don't declare the variables x, y, sizex and sizey and the color array along with its values for each index]:

int currentIndex;

void setup()
{
 currentIndex = 0;
}

void draw()
{
// you can use a color[] to fill a rect calling and employing the
// currentIndex variable:
fill(color[currentIndex]);
//and draw the rect
rect(x, y, sizex, sizey);
}

void mousePressed() // this is what increments the currentIndex
// everytime the mouse is pressed
{
 currentIndex ++;
if(currentIndex > 4) // you could use if(currentIndex > color.lenght)
{
currentIndex = 0;
}
}