Applying the scission concept to chromatic contrast configurations brings up another problem pointed out by Da Pos and Bressan (2003). For example, having green segments embedded in a purple outer grid leads to perception of a transparent green layer in front of green segments within the diamond (Fig. 1(f)), which is hard to reconcile with the notion of green split into green and magenta — a logical prediction of the chromatic extension of the scission theory to this neon configuration. It is easy to verify that a physical green filter held in front of the purple grid produces a percept of a green region in front of a purplish grid, consistent with scission, but not with the perception of Fig. 1(f). These inconsistencies were pointed out and discussed in detail in Da Pos and Bressan (2003).