On tall modern smartphones, themes fill the black bars around the dual-screen setup with artwork.
While the mainline Citra offers only a few built‑in color schemes, the unofficial fork takes theming to an entirely new level. Maintained by developer weihuoya, Citra MMJ is a performance‑focused fork that runs faster than the original, especially on weaker hardware like Exynos and MediaTek chipsets. citra android themes