I would say that the middle illustration on You are not allowed to view links. Register or Login to view. makes it clearest that a process is represented in Quire 13. The red and the dark blue "drain" finally end with the light blue drain which then represents the color of the lower "pool". So a kind of separation could be made here. It just appears as if the blue liquid from You are not allowed to view links. Register or Login to view. is being recovered.
edit: It's hard to tell if the brown something between the arm and body of the front nymph is also supposed to represent a hidden "drain". But in any case brown also belongs to the sequence. After all, the " splitter " on You are not allowed to view links. Register or Login to view. has almost the same color.
edit: It's hard to tell if the brown something between the arm and body of the front nymph is also supposed to represent a hidden "drain". But in any case brown also belongs to the sequence. After all, the " splitter " on You are not allowed to view links. Register or Login to view. has almost the same color.