Mitsubishi MOTORS Colt 2007 Owner's Manual page 76

Seat and seat belts
To unfasten
1. Hold the latch plate (B) and push the button (F) on the red
buckle.
2. Hold the latch plate (A) and push the button (G) on the
black buckle.
2
2-28
To store
When the rear-centre 3-point type seat belt is not being used,
insert the latch plate (A) into the holder (H) and stow the
tongues as illustrated.