Same sort of blue as this?:
I was told 1997 when I paid £50 for the frame and fork on retrobike.
I also owned a 1995 fire mountain, which came in a sort of battleship grey with 3×7 STX and gripshift, did me well for quite a while actually…
My advice would be, get it rolling either geared or SS as your milage, budget or knees require, and use it as a winter hack to save the nicer, newer kit from the ravages of winter.
If you flog it adopt the “pay it on philosophy” and don’t charge the earth, as nostalgic as I am for old konas, these were decent but basic bikes, intended for people to ride, a show pony it ain’t…