Just for the record, and because I have a spare minute at work:
Mini 1000, Sandglow
Triumph Dolomite, Emerald Green
Citroen 2CV6 Club, Bleu Azurite
Citroen Visa, red
Citroen Dyane, Bleu Azurite
Triumph Dolomite, Russet Brown
Renault 5GL, metallic brown
Volvo 360GL, metallic grey
Vauxhall Viva, blue/rust
Morris Ital estate, Vermilion
Renault 18GL, silver
Ford Capri 2.8i, silver
Mini Chelsea, red
VW campervan, green
Citroen BX, silver
Mitsubishi L300 van, blue
Land Rover 90, blue
(which became, over time, Tiggrr, orange V8 trialler)
Ford Transit campervan, white
Range Rover 3.9, red (ex-SAS)
Discovery II, blue
Range Rover 4.6, metallic red
Discovery 1, silver
Discovery II, metallic green
Ford Mondeo estate, silver
Mazda MX-5, metallic blue*
Mercedes 190E, smoke silver*
*current
I'm sure I have missed a couple. (And then there are the motorbikes, don't ask.)
I make that 27% blue, 27% silver, 19% red, 12% green and 15% other. No conclusions can be drawn from this data.