You had three color schemes to choose from that year: Candy Jet Green with Black, Candy Garnet Brown with Black, or Candy Gold with Black.
Now, finding matches for those colors is going to be tough. This information is from a guide to Honda colors that Lubritech published some time ago. Likely no longer valid, but this gives you some idea as to how these bikes were painted.
CB 500 Model Factory Color Top Coat Middle Coat Base Coat Notes 1971 CB500 Candy Garnet Brown Candy Garnet Brown HC-16-204 Candy Silver Basecoat UC-16-100 Black trim Candy Starlight Gold Candy Starlight Gold HC-16-601 Candy Silver Basecoat UC-16-100 Black trim Candy Jade Green Candy Jade Green HC-16-904 Candy Silver Basecoat UC-16-100 The ID book's "Jet" Green may be a typo 1972 CB500 Candy Jade Green Candy Jade Green HC-16-904 Candy Silver Basecoat UC-16-100 Candy Garnet Brown Candy Garnet Brown HC-16-204 Candy Silver Basecoat UC-16-100 Candy Gold Candy Gold HC-16-600 Candy Silver Basecoat UC-16-100 1973 CB500 Candy Bacchus Olive Candy Gold HC-16-600 Blue Metallic Basecoat UC-16-106 Black and white trim Flake Sunrise Orange Candy Orange HC-16-202 Flake Silver Basecoat UC-16-103 Candy Silver Basecoat UC-16-100 Black and white trim Maxim Brown Metallic Maxim Brown Metallic HM-16-202 Black and white trim
--Glenn