You know, the color silver is actually the best looking Enfield TB in my opinion. If I were you, I would leave it untouched for some time at least. Have you seen the photo of my current Lightning 535 on that Enfield owner's thread? The only mod that I would recommend initially is changing the handlebars to a 'RD 350' handlebar. The top long distance riders do it, and I can see why. The co. handlebar is not ver practical and comfy. The RD bar changes it beautifully.
If you must change the color, why be ripped off by the dealer? You can easily sell the company tank, tool box, mud guards, etc. and buy/exchange some 2nd hand tank, tool boxes, etc. and be left with enough cash to change the paint scheme.
Gear sounds excellent, I have always worn a helmet since I was 16 and on a Bajaj M-80 and I can swear by the safety provided.