Color
Similar to many other graphics programs, can specify color in Processing with red, green, and blue (RGB) values.
(255, 0, 0) -> red
(0, 255, 0) -> green
(0, 0, 255) -> blue
(0, 0, 0) -> black
(255, 255, 255) -> white
The Processing Development Environment includes a color selector (menu: File / Color Selector), or you can use any other color selector (Photoshop, Google) to obtain RGB values for the color you want.
If you specify a single value, it is used for all three color channels, so
background(0);
is the same as:
background(0, 0, 0);
Here’s an example that changes the background color to grey
(background(128)), the fill color of the ellipse to red (fill(255, 0, 0)),
and the border color to blue (stroke(0, 0, 255)).
size(400, 400);
background(128);
fill(255, 0, 0);
stroke(0, 0, 255);
ellipse(200, 200, 100, 50);
