Try a Stencil:
Although in manufacturing that spot graphic was probably screen printed on solid fabric, you can get a similar look with a stencil and spray paint. I think these are available at the big craft stores and I've seen cute stencils for sale on etsy.com. It's also fun to use acetate and cut your own designs. I have also used contact paper for more simple graphics, just use scissors to cut out the design, peel the back and stick it to the fabric. To keep most stencils from shifting, I use spray glue on the back of the stencil so it adheres flat to the fabric.
Paint: For color you can use traditional stencil brushes and fabric paint. If you want to try spray paint, lightly 'dust' the stencil with spray paint until you get the right level of color. And yes, I use regular spray paint from the hardware store when I can't get fabric paint. There is an odor that fades away if you hang it out to 'air'. I use this same technique to use lace and crochet as the stencil, and spray over those to get a lacy pattern.
Note: to prevent wet paint from bleeding through the fabric to another layer, be sure to have a pad of newspaper behind the fabric, especially when painting on garments. I also add a 'mask' of cardboard around the stencil, in case the wind blows the spray (you need to play with this outside or in a big space with air circulation).
Here is a nice stencil tutorial from DesignSponge: http://www.designspongeonline.com/2009/12/diy-project-printed-burla...
hope your projects are a success! Jen
Another idea for creating your own or finding something unique is Spoonflower