I’ll try and keep this short…. Ultimately choosing a color or graphic or whatever is obviously up to you and what you’ll be willing to look at for a while. My advise is to feel out the soul of your build. The gmt400 is a relatively box shaped body, compared to something, say more curvaceous, such as a late 30’s car up to the early 50’s. In my opinion, the latter being an excellent candidate for pearls, candies or details that rely on lighting shifts to “show off”. Ahem, ghost flames, etc. Whereas more square rides are better suited for graphics or metallics. Flat panels are great canvases for whatever you’re into, flames, pinstripes, racing stripes, lace. If you pickup landed in my driveway and I had to pick a color it would be dark metallic storm grey with twin matte black racing stripes outlined in a gloss black border maybe 1/4” thick. Of course that’s my perception. Take your time you’ll feel what’s perfect, you probably already have an idea what is.
Here’s a pic of my Plymouth, gloss black with violet pearl, Stunning in the sun, but I feel like the color would be cheated on a gmt400 with its more abrupt edges by comparison. What ever you do, show it off to us! We’re all waiting!