hypnotic color circles. collection of colorful psychedelic spiral backgrounds. abstract hypnosis optical illusion swirls. .

abstract backdrop background backgrounds blue center circle circles circular collection color colorful concentric curve decoration design effect element geometric graphic green helix hypnosis hypnotherapy hypnotic hypnotism hypnotize illusion illustration line motion optical pattern psychedelic radial red rotating rotation round shape spin spiral strip swirl swirling swirls texture twirl twist vector vertigo volute vortex whirl whirlpool yellow