I've noticed that some buses have a slipshot refurbishment work
done on them though. More so for BNDEP. Seats can be refurbished
into the yellow ones, but yet still leave the initial bluish-grey
ones intact without even cleaning or something, much less switch
into the red leather ducts.
Point out also that the red leather ducts thingy has 2 types.
One type is the more leather-like kind of texture you would find in
sofas, the other type is the same as those from the VO3x Batch 2/3s
before their (the VO3xs') refurbishment.
Sometimes I really feel sad for the BNDEP buses. AFAIR there
were quite a number of VO Batch 2 with new seat covers literally
wrapping the old seat covers within it. Not to mention the aircon
duct covers of some VO batch 1 lower deck that were never replaced
after the grey one was removed and left barren.
Comparing the interior condtion of the BRAM VSOs with BNDEP ones
really show the stark contrast.