Neon color spreading
Illusory color patches appear in the homogeneous white background.
References
Van Tuijl, H. F. J. M. (1975). A new visual illusion: Neonlike color spreading
and complementary color induction between subjective contours. Acta Psychologica, 39, 441-445.
Van Tuijl, H. F. J. M. and de Weert, C. M. M. (1975). Sensory conditions
for the occurrence of the neon spreading illusion. Perception, 8, 211-215.
Redies, C. and Spillmann, L. (1981). The neon color effect in the Ehrenstein
illusion. Perception, 10, 667-681.
Redies, C., Spillmann, L. and Kunz, K. (1984). Colored neon flanks and
line gap enhancement. Vision Research, 24, 1301-1309.