Originally all red, refinished in black burst. Eden paddle-head guitar neck converted to bass. Strings are lower four of 5-string sets, unwound to fit 25" scale.
A conversion neck is one that can convert an instrument from one scale length to another with no other modification. A common conversion is 34" to 32". By overhanging the 20th fret, or leaving it off, you can use the stock bridge location on the body, just adjust for intonation. Such a neck will work on any standard bass body. A conversion from 34" to 30" requires overhanging two frets, or losing one or both.
I always thought of Sade as a very stylish singer, but not necessarily a great one; kind of weak, actually. A model who could sing a bit. I was wrong. Watch these concert videos.