have it zoom in and out once in a while Periodic bursts
edit
have it zoom in and out once in a while Random intervals
edit
Spell The Name Joshua Color Transitions
edit
have it zoom in and out once in a while Random Intervals
edit
add circles on the same pattern Pulse Animation
edit
add circles on the same pattern Oscillating Opacity
edit
edit
edit
have it zoom in and out once in a while Depth of Field
edit
click to explore, then edit