Alright, guy's.... Some times I wish I had never put any acid stained pieces on the net for anyone to see...I have been doing it for years but I made the mistake of posting on the internet a couple years ago...first off the stain I use is old and homemade...probably won't make anymore...it is dilute nitric acid with some steel wool dissolved in it..the amt. of acid and water determines the final color...it is made to stain tiger maple but will work with other figured woods to some extent...the difference in the pores in the grain determine the amount absorbed and hence the dramatic striped color. the amount of heat applied determines the shade...green tinted means not enough heat...this is an old gunstock staining method used by the Kentucky rifle makers in times long passed...I got it from an old time rifle maker that used to live outside of Franklin, Tennessee. It does not fade with time and is difficult to sand out if you change your mind...Potassium Permanganate is also a chemical that will stain wood a darker color and bring out the stripes...but it will lighten with age and is easier to sand out if you change you mind down the line or want to refinish a piece at a later date