Inorganic Halide Perovskite Thin-films are evaluated as color-conversion layers (CCL) for MicroLED displays. Green and Red-emitting, thin-film CCL exhibit very narrow emission band, opening the possibility to covering 90% of the color space defined by Rec. 2020. They show very high absorption which allows to envisage CCL thicknesses of only ~ 500 nm, which paves the way to reaching pixel-pitches below 1 µm. These films exhibit very promising stability under high optical power. They appear to be very well suited for high demanding Augmented and Mixed reality applications.