[Bob Carriere]

I would go wtih grey as it is easier to see if you have proper coverage.....even on the second wet coat.... you will probably find some areas you though was covered but was only misted over. Yes scratches will show easier...... but you can and will toouch up anyways..... my least favorite would beblack oxide for the same contrasting reason....

Don't forget to mix paint very well.......

Bob