I've had great results with faded indented logo's using the following method:
After repainting the whole main body and allowing plenty of time to not only dry but harden, the logo can then be brush filled in with contrasting paint that works with white spirit as solvent. Excess paint can then be wiped off with single stroke of clean tissue lightly soaked in white spirit.
Yeah I had that thought earlier. It’s an option.
I might try some rubberised masking fluid.
