I've seen a few Dr Who machines and I've seen ONE where the Yellow is not white 

Along with Fishtales and IJ - This is a title that NEEDS decals. If I owned a DR Who, I'd either repaint the existing decal or attempt to repro (given the fact I would be owning the machine  )..

There is a site on the net with a dude who used a paint pen to do his IJ decals.