I like the look of the tan interiors.
Looks like your headliner is next. Not a difficult job. The only main tricky part is getting that rear upper plastic panel off w/o breaking the clips. If you're removing plastic from a junk yard truck, you might want to get the rear upper piece just in case. Lot easier if you're already there at the yard.
Headliner: Remove & lay the headliner piece, fabric-side up on a sheet of plywood (support the sides with some wood). Put a couple screws through it into the plywood to keep from moving around as you remove all the old fabric. Then remove screws once old foam is cleaned off. Spray new headliner material (from Joanne's Fabrics) with 3M spray adhesive working from the center outward. leave enough overhang in the front (about 1.5") to curl over the front edge of the headliner piece.
Best of luck!