Thank you falcon, Wayne, Mel, Berny, and ruddratt !
Wayne - I mixed RLM 66 and flat black for the cockpit floor and boxes. The instrument panel is part of Eduard's prepainted PE (the only way you can get some of their stuff now), and it's very close to RLM 66. I wanted a wash to show on the floor and throttle quadrant, and I didn't want the instrument panel to appear too light. I chose a shade that was between RLM 66 and black for the floor. I like to keep my contrasts on the low side. The higher the contrast, the more "stark" it appears to me, and the less realistic.
Berny - I've probably used Eduard PE on a hundred kits. My first experience with PE were the steel frets found in the DML kits. If you can learn to use those successfully, the brass seems like a luxury. If you like the looks of PE, and want to gain confidence using it, Eduard's "Zoom" sets are a good choice. They usually cover just the cockpit, require little or no surgery to the plastic, and are reasonably priced. I admit to being a "PE junkie," since I won't build a kit now without it. It adds a few hours to each build, but I can't beat the detail it provides.
Thanks again !