I did all the wood grain in my wife's vehicle which is same interior as yours. I used steel wool to ruf it up and then used Krylon's Plastic Fusion paint and clear. Seems to be holding up great so far. The chevy onyx black is cool, when I sprayed my harley myself, that is what I had mixed up...Good Luck.
--2013 CC Z71, Edelbrock charged, cam, long tubes, 4.5" Zone, 285/70/18 KM2s on Gear Big Block, Kenwood system, LineX, Retrax, Katskinz, NFab.
--2012 Dmax CC Z71, Cognito UCAs, braces, Fox 2.0, LineX, Nfab, Retrax, Ranch Hand Front/Back, Custom Katskinz, Black Gear 18x9 wrapped in 285/70/18 Toyo MT.