Thanks for the reply!

PImage b;
void setup() {
size(400, 400);
b = loadImage("color.jpg");
}

void draw(){
loadPixels();
updatePixels();
image(b, 0, 0);
fill(255);
color c = pixels[(mouseY*width)+mouseX];
println(c);
fill(c);
rect(200,200,200,200);
}

This is my code, if i comment out the image(); it doesnt show the image but my color c is not using the color of the image but merely from the color that i see.