No official link exists. Download a skin pack from Archive.org (search "Flash CS6 Dark Theme"), replace your UI folder, and enjoy your new dark mode.
Adobe introduced a native dark user interface across its Creative Suite starting mostly with Creative Cloud (CC) apps and select CS6 programs like Photoshop and Illustrator. Flash CS6 was unfortunately left behind with the classic "Light Gray" look. Because Adobe officially discontinued Flash Player and ended support for the Flash authoring suite, no official patches or links exist to update the software's core skin. adobe flash cs6 dark mode link
: Flash CS6 is no longer sold or officially supported by Adobe. Most modern "dark mode" links for this specific version are likely outdated or unreliable. If you need a Dark Mode experience: No official link exists