Like the 40’s and 50’s truck bed where it has that wood grain look.
Here is a fairly old article done by an FSM ship modeler www.steelnavy.com/wood%20deck.htm
Rex
I know a guy who would lay down a light brown base coat and then draw in the wood grain with a colored pencil. My hands aren’t steady enough to do that!
This oil paint technique may also work on truck beds.
I have used two methods. I photographed an oak door with my digital camera and used the image to create an inkjet decal, which I applied to wood areas.
I also paint them. I use a method similar to hypertex. I paint a lighter tone first, then apply a darker brown with a somewhat-dry brush.
It is amazing what you can do with varying amount of paint on a brush. Not only can you apply it normally wet, but in addition to dry brushing, which makes a transparent coat of paint similar to dot filtering, but you can use a continuous variation in wetness, and each degree of wetness can produce a somewhat different effect.
On the Beverly Hillbillies truck I glued wood “splints” (used in chemistry for flame tests) to the truck bed, stained and weathered them. These look just like wood stir sticks but are a little thinner.
Also, Google and YouTube are your friends!
Thanks for the suggestions. I tried adapting the suggestions and was able to do it within a few hours.