I've also found that Tamiya X12 Gold Leaf is a good match for the gold used be Mack, Tamiya X13 Metallic Blue is a good match for the blue that International used on their MaxxForce engines, Tamiya XF18 Medium Blue is a good match for the Detriot Diesel Series60 Blue (I have also heard that Humbrol #87 Matt Steel Gray is close), and Testors Model Masters Grun RLM 62 is a good match for the early Detroit Diesel Alpine Green. I have heard, but cannot confirm, that Testors Red 1203 is a dead-on match for the International Red, while Testors Model Master Auto Lacquer 1969 Ford Metallic Acapulco Blue can be used for the International V800.
It's so little! Probably a close match for the Type 95 Chi Ha, though. I don't think the M1 or M60 would bother with the main gun against the FT17/M1917. I think they'd use the 50cal, or just push it out of the way.
I am enjoying this build, and I think you are doing a great job on it. As far as the ship's boats go, I think they were stored with everything ready to go (oars, sails, masts, etc.); but I'm not 100% sure. You could always make a canvas cover for them.