Here's some info that Paul B. posted back in 2007 on another site.
The IH 901 white was used from the beginning to serial number 218009 (Nov 67), and then 902 white was used to serial number 375938 (Feb 71) and then 935 white until the end. The yellow was 483 Federal Yellow with a period where 483B was used, then back to the 483. To my knowledge the 483B is not available from anyone. The 3 whites are hard to tell apart unless you see them all together. 901 has a green tint, 902 a gray tint, and 935 has a cream tint, but when the original color faded after a few years, they all look the same. A mistake some people make when repainting is to try and match the faded white color they see, but that is not what it originally looked like. You can see the original color of the white on the inside of the hood, or the wheels (the part the tire covers) sometime if it isn't too rusty, or some other are that has not been exposed to sunlight.
The 901 and 902 whites are only available from the auto paint stores as far as I know, although I have been told that a match may be available from International Truck dealers. The IH white that you find at Case IH, TSC, or other places that sell "tractor" paint, is supposedly a match for 935 white.
The IH 901 white was used from the beginning to serial number 218009 (Nov 67), and then 902 white was used to serial number 375938 (Feb 71) and then 935 white until the end. The yellow was 483 Federal Yellow with a period where 483B was used, then back to the 483. To my knowledge the 483B is not available from anyone. The 3 whites are hard to tell apart unless you see them all together. 901 has a green tint, 902 a gray tint, and 935 has a cream tint, but when the original color faded after a few years, they all look the same. A mistake some people make when repainting is to try and match the faded white color they see, but that is not what it originally looked like. You can see the original color of the white on the inside of the hood, or the wheels (the part the tire covers) sometime if it isn't too rusty, or some other are that has not been exposed to sunlight.
The 901 and 902 whites are only available from the auto paint stores as far as I know, although I have been told that a match may be available from International Truck dealers. The IH white that you find at Case IH, TSC, or other places that sell "tractor" paint, is supposedly a match for 935 white.