NVIDIA Shield: Subtitle colour not updating?

Plex Players
1

So, I’m using Plex on the Nvidia Shield (same issue on all the latest versions the past year) and I hav tried changing the colour of my subtitles. Nothing happens, I get the bright white one every time. Are there any issues with this?

2

What sort of subtitles are they? These are SRT subtitles I changed to this pinkish color

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