  Even at weak coupling the physical, observable spectrum of gauge theories
with a Brout-Englert-Higgs effect can deviate from the elementary one of
perturbation theory. This can be analytically described and treated using the
Fr\"ohlich-Morchio-Strocchi mechanism. We confirm this by lattice simulation
for an SU(3) gauge theory with a fundamental scalar, a toy model for grand
unification. We also show that this has experimentally observable consequence,
e.g., in scattering cross-sections of lepton collisions in this toy model.
