Optical illusion with green and orange circles

1680 × 1050

Optical illusion pattern

800 × 600

Blue Ovals on Yellow

900 × 640

Green Circles on Purple

1600 × 1001

blue background with green circles

1024 × 768

diagonal teal lines on black

1920 × 1277

blue dots on green background

1900 × 1353

blue dots on green background

1680 × 1050

yellow dots on purple background

1024 × 768

blue dots on green grid

1680 × 1050

green and black dot pattern

2560 × 1600

spiral dot pattern

985 × 751