Well I went and tried the stain on my Avery FFD's and after several test runs it worked out great.
I recommend touching up any areas where the flockng has come off with a dark color paint to match the back or neck color
Tips. USE DARK WALNUT
stain do not use light walnut, Chestnut, or several others which appear like good matches.
I found using a staining pad to apply the stain worked best. Its much easier to layer the color on. Just do the backs, neck and head. Do not use a brush or something which absorbs a lot, this will transfer too much of the stain. Where I applied the stain with a brush or foam brush it's taking two weeks or longer to dry and bleeding was an issue. I applied stain to the barred up sections on the chest and this was not favorable as too much bleeding occurred. The side bars are easy to apply with a foam brush but only apply in a "tight" line as it will expand triple on what you dabbed.
I got caught up in staining so no before and after pics. I can send the final product out if necessary. Very easy to do when using the staining pad. This is sort of a tight cheese cloth about 1" thick and 4" x 6" size.