Looks very tidy. A good T-cutting and polishing will bring it up nicely. If you can't get the mildew out of the headlining, ty rolling on some anti-damp paint from your DIY store to seal the surface, followed by kitchen/bathroom emulsion of whatever colour you like.
T-cut is kind of polish that has very,very fine abrasive compounds that remove the top surface of faded, oxidised paint, revealing fresh original paint underneath. Best done by hand, as over-enthusiastic machine polishing could take off too much.
It sounds frightening, but it's very gentle and only removes microns of paint. LR paint is quite thick, so you won't go through by hand (you'll wear you arm out first!). There will be similar cutting compound available where you live. Polishing afterwards will improve the appearance even more.