| Formula | System | Code | Alternate | Name | Suffix | Color Deck |
|---|---|---|---|---|---|---|
| 990NP421 | 990 | P421 | GRAY | B | ||
| 990NP422 | 990 | P422 | GRAY | B | ||
| 990NP423 | 990 | P423 | GRAY | B | ||
| 990NP423C | 990 | P423C | PANTONE GREY | H | ||
| 990NP425-A1 | 990 | P425 | A1 | GRAY | B | |
| 990NP427 | 990 | P427 | GRAY | B | ||
| 990NP428 | 990 | P428 | GRAY | B | ||
| 990NP429 | 990 | P429 | LT GRAY | B | ||
| 990NP430 | 990 | P430 | GRAY | B | ||
| 990NP431 | 990 | P431 | GRAY | B |