Im doing my first modern armour the 109 a6 Palladin, can anyone suggest the aprox colour for O.I.F. vehicles I have easy access to Tamyia, Humbrol, and Revell paints,preferably Tamyia. Cheers :-)

Don't know about the paint brands you mentioned, but Testor's Model Master Enamel Sand is a pretty good match. Once weathered and dirtied up a bit, it looks great. Check out my gallery to see some vehicles paintedthis way. It is all I use for modern sand vehicles.

Model Master (Item #2136)and PollyScale (US Tan Special 505386 FS 10400) have the correct shade. Tamiya will require a good deal of mixing to get the right shade. The armor sand Heavy Arty mentions above is more for the light color in the MERDC pattern.

Using tammy will take a bout three colors, I'd guess. XF-60 (desert yello) XF-59 (buff) and probably some white. LIke AJ said if you can find the Testors US Army/USMC Gulf War Sand you'll be in like flynn.

I finbd white ensigns does a good colour match for US armour

Well, that saved me a hassle, I was thinking about using the MM sand color which is obviously too light because it matched the color of the picture of the completed kit on the box.. Have a dark tan color which matches the swatch of the special MM color perfectly so now I'll use that for my Abrams kit I'm doing for the M-1 campaign.

Which color are you going to take for your Abrams ``? I didn t understand what you said... I am in trouble too to find a good sand color
MM US Marines ARMy too dark once wash applied
MM SAnd too light

Euro:
Just add a tad of white of the Testors USMC color, that's the correct color. I've done that and have been happy with the outcome, addingf white also compensated for scale effect (I can't give a good explaniation other than pait should look a little lighter in a smaller scale than 1:1)
It doesn't take much white to alter the color of the USMC sand, just a little. You also have to look at numerous reference in many different lighting settings as the color really varies from photo to photo.