Yeah Arma changes colors on vehicles due to their material so you'd have a really hard time translating colors from vehicles as they're all really different. Personally I'd experiment more for something a bit more Orange then what you have. Also helps to take about 4-6 pictures with varying angles and distance. One more thing to note would be that this will probably look bad post compression if you're close to it due to the way Arma has the Orca and the variation in patterns in colors, I'd suggest something a bit simpler but it looks good where its going.