int x = 50;
int y = 50;
int w = 100;
int h = 75;
void setup() {
size(200,200);
}
void draw() {
background(0);
stroke(255);
if (mouseX > 50 && mouseX < 150 && mouseY > 50 && mouseY < 125) {
fill(175,20,30);
} else {
fill(20,30,200);
}
rect(x,y,w,h);
}