Decals are pretty decently priced i feel, even from the dealer. I don't know an exact figure, but the last lset i got i think it was around $70 for a full set (don't quote me), thats 5 stickers.
I can't tell you what bobcat paint will set you back, but the paint you pick up may not be an exact colour match if the paint has faded. You may be able to get a colour match and some industrial enamel from a paint shop.
Another member painted his machine, he was rather unhappy with bobcats paint, it may have just been older stock though.