Importing a photo & drawing tool

Here is a photo from my camping trip to Joshua Tree National Park

Joshua Tree

and here is a snapshot of my drawing tool


I attempted to link an image from the web but when I switch to javascript the image doesn’t show…

PImage webImg;

void setup() {
size(850, 550);
String url = “”;
webImg = loadImage(url, “jpg”);

void draw() {
image(webImg, 0, 0);

I played a lot with my drawing tool, however here are a few adjustments I am still figuring out:

1) how to change background if key is pressed while mouse is not pressed.

2) how to make the shapes change color at a slower pace