Sarlat SNES Background

Working up a scene of Sarlat in the style/constraints of a SNES background and following that as much as possible.

Couple rooftop textures to start:
(16 colours max, or less depending on which tile it falls into within the final BG):

Referencing:

And...

en.wikipedia.org/wiki/Super_Nintendo_Entertainment_System 
www.snesmaps.com/maps/ChronoTrigger/ChronoTriggerMapSelectBG.html

(Chrono Trigger)