I have this DV disc and the subtitles as seen in your first picture are the SDH subtitles and the second picture is the standard subtitles.
This is from my remux with PGS subtitles.
Not sure what your two sources are or if their subs are PGS or SRT but I’m almost 100% certain that your first picture is SRT since the second line is part way out of the frame and I’ve never seen PGS subs do that and your second picture appears to be PGS subs since it matches perfectly with mine as far as font and placement.
You’re right @Kontrarian, that first shot was of the SDH subtitles, and they were indeed SRT. The second remux uses PGS subs. I didn’t realise Kodi can’t control their colour. Thanks for posting your stills!