Starting from the monomer 1-1-dihydroperfluorobutylacrylate we synthesized a new model system of highly charged colloids with a low refraction index. By preparing a binary mixture of these particles with a small number of highly scattering polystyrene particles we could measure the time dependent self-diffusion coefficient at different ionic strength. As we recorded at the same time also the local order of the system by static light scattering we could scrutinize different empirical and theoretical relationships concerning the dynamics of our liquidlike ordered system.