Sir,
Haven't checked it yet with excise pplz as my rig is yet unregistered, however i think they shouldn't have any problem with the color or army looks as they must know that its army auctioned so it suppose to be like this.
However army doest have a serious problem if you keep your rig in a replica like them as it creates alot of confusion for them and army color is strictly banned in cantonment areas, simultaneously the army looks like mine would double their grudge