Illustration of colloidal systems comprising a) examination of a new and rapid algorithm for dealing with dielectric discontinuities in spherical geometry, b) charged colloidal solution including the limit of strong electrostatic interaction, in which attractive ion‐ion correlation interactions appears, c) structure and stability of solutions of macroions with oppositely charged polyions added, and d) organization of magnetic particles with an off‐centered embedded magnetic dipole at zero and non‐zero magnetic field. Key references: a) Refs. [27, 28], b) [29, 30], c) [31, 32], and d) [33]. a) Reprinted with permission from J. Chem. Phys. 2014, 140, 044903. Copyright 2014, AIP Publishing LLC. b) Reprinted with permission from J. Chem. Phys. 2000, 113, 4359–4373. Copyright 2014, AIP Publishing LLC. c) Reprinted with permission from Macromolecules 2003, 36, 508–519. Copyright (2003) American Chemical Society.