We learnt about, among the other three fundamental interactions, the strong interaction. The particles that are affected by it are those with color-charge. It's carrying particles, gluons, have a nonzero color-charge, thus thake part in the interaction themselves. The lecturer made a remark on that's makes the interaction so complicated, and intuititively it indeed does - but how exactly? We proceeded describing the color-symmetry (color-octet/singlet, Gell-Mann matrices, etc.) and looked at an example interaction (showing how the color-charge changes), but we never actually explained how the charged property of the carrying particle changes things. The three different charge makes it hard to come up with an intuitive picture - so I'd like to consider an analogue.
Take the electromagnetic force. It's working is well-known and intuitive, with a single kind of charge. It's carrying particle, photon, is as massless as the gluons, but it has a zero electromagnetic charge - so they don't participate in the interaction, only transmit it. Change now one property of the photon: make it have a nonzero q charge.
How would this interaction, with one charge and a weightless charged carrying particle be different from the electromagnetic force, both subatomically (-> Feynmann-diagram) and macroscopically? (Or is there some theorem that forbids even the theoretic existence of such a force?)
As an example: would we experience something alike the color confinement? Would it still have infinite range? Would particles change charge during interactions? etc. What I'm looking for is an intuitive picture about what does the color-charge of the gluons cause.