as to the seats colors :, the BEA said :
From a preliminary examination we have concluded that it is likely that the cushions are from the missing aircraft.
I think they would not make this statement if they had a little more evidence , as to the color ,interiors upholstery also change from time to time on old aircraft especially, do not take an old video as proof...
Anyway if you read carefully the AAIB statement , they have radar data well below 2300ft and are likely to find the wreckage , ( or the bits and pieces it it hit the water with high velocity )
Based on a detailed assessment of the flight path and last known radar position, we have now identified a priority search area of approximately four square nautical miles. Through the Ministry of Defence’s Salvage and Marine Operations (SALMO) Project Team, we have commissioned a specialist survey vessel to carry out an underwater survey of the seabed to try to locate and identify possible aircraft wreckage
The seats cushions will soon become irrelevant ..