A multicolour view of MCSNR J0508−6830. Top left: X-ray colour image of the remnant, combining the data from all EPIC cameras. The red, green, and blue components are soft, medium, and hard X-rays, as defined in the Sect. 4.1. Top right: the same region of the sky in the light of [S ii] (red), Hα (green), and [O iii] (blue),where all data are from the MCELS. The X-ray contours from the medium band are overlaid. Bottom left: same EPIC image as above but with [S ii]-to-Hα ratio contours from MCELS data. Levels are at 0.6, 0.8, 1.0, and 1.2 in white, cyan, magenta, and red, respectively. Bottom right: the remnant as seen at 24 μm, with the same [S ii]-to-Hα ratio contours as on the left.