Bokeh Effects. Created in Inkscape as vectors.
High Resolution, saved in CS5
Tips for getting that bokeh look:
Start with a dark or gradient background.
Paint some bokeh in normal brush mode.
Then paint using Color Dodge brush mode.
Color Dodge is what will give that glossy look.
optional- Gaussian blur everything.
Then start painting again with color dodge mode.
Change brush size for different looks. Experiment!
Background using these brushes...[link]