Tilla,
If you can live with a brush...
One of the BEST paints for Wood, Metal, or Plastic is a Petit Boat Paint, Flat "Dead Marsh Grass" as a base, then Krylon or Rustoleum in spray cans of Matte Black or Brown.
I had the original coat on my aluminum boats (over Zinc Chromate Primer) for 15 years before I had to do a touch up.
That stuff's a tough, durable oil base paint and sticks like glue!
I think Fisherman's has the best price on it...if not there then try West Marine.
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This might not be the most "Pro" camo job you've ever seen, but it's worked just fine for me.
In the flooded trees the boat virtually disappears...
Originally, I had 4 colors (Dead Marsh Green/Black/2 Shades of Brown), but last time I retouched I just went with DMG/Black.
Since I have different colored camo nets, the paint's only "hiding" the lower 40% of the entire blind setup.