In multi colors, I coat over coats all the time. I have even re-coated a wood stock that I did not care for the color..
From Forest Green, to Coyote Tan..
This I my BABY.. 6.5-06. Ted Williams action, Douglas barrel. Tips Mullies easily�
I have abused the snot out of it, and no issue what so ever..
The wood was porous.
Also, if you look at the Federal Brown, I tested the RE-DO factor. The action was done at a separate time, and I feathered the color onto the barrel for a blend..
I really like the custom colors now..