I did check out a few ranges of yarn, but bottle green seemed to have disappeared off the spectrum. But then this cone turned up in the charity shop across the road, at a cost of £4.00. I wound it into balls and there was enough.
I started by knitting the sleeves separately to remind myself of the pattern. Once the body was complete, I tacked it together and it needed some adjustments. The yarn was quite solid and had worked up larger than needed. What to do?
In fact, I unravelled the sleeves and knitted them again in the smallest size. Then I took out two inches at the top of the side seam of the body just by tapering off the seam. The new sleeves fitted in easily and looked much neater.
So, what about buttons? I decided on only three this time, placed to fit with the frogging at the centre front. I don't want to buy buttons when I have so many in stock, so in fact I have used two which match and one of a similar type and size. I doubt that anyone would notice.