Medium evolution of a static quark-antiquark pair in the large <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>N</mml:mi><mml:mi>c</mml:mi></mml:msub></mml:math> limit

We study the transitions between different color states of a static quark-antiquark pair, singlet and octet, in thermal medium. This is done non-perturbatively exploiting infinite mass limit QCD. interesting because it can be used for future developments within framework Effective Field Theories (EFTs) combined with other techniques, like lattice QCD or AdS/CFT, to gain non-perturbative information about evolution quarkonium also obtained expressions large $N_{c}$ limit. allows us learn lessons that are useful simplify phenomenological models plasma.