There are a few vehicles in gta that have 4 colors, samp only let's you use two.
camper, 1,31,1,0, 1,31,1,0, 1,20,3,0, 1,5,0,0, 0,6,3,0, 3,6,3,0, 16,0,8,0, 17,0,120,0
cement, 60,24,23,0, 61,27,123,0, 65,31,31,0, 61,61,30,0, 81,35,23,0, 62,61,62,0, 83,66,64,0, 83,64,64,0
squalo, 0,0,0,1, 1,5,1,1, 3,3,0,1, 1,22,1,1, 1,35,1,1, 1,44,1,1, 1,53,1,1, 1,57,1,1
carcols.dat
On SA-MP you can not choose what variation of a car or bike you want. (There are extras on bikes and cars, would be cool to be able to choose when spawning)
http://static2.wikia.nocookie.net/__cb20091007111060/gtawiki/images/2/29/ZR350-GTASA-rear.jpg (Wingless ZR350)
https://gtwfilesie-thumb.grandtheftwiki.com/ZR350-GTASA-front.jpg/800px-ZR350-GTASA-front.jpg (ZR350 with wing)
Some tuning parts are appliable in SP, but not in SA-MP. These parts are in the data file, just commented out and do fit the cars. There are probably more possible variations to these.
https://forum.sa-mp.com/showthread.php?t=525760 (Scroll down to the bottom for the interesting ones)
Moved from: https://www.burgershot.gg/showthread.php?tid=99&pid=2519#pid2519