Read https://download.videohelp.com/DVDSubEdi.../Guide.htm to understand the coloring of .idx/.sub subtitles.
Looking at the idx parameters:
hex 101010 is basically black = 16/16/16 rgb
hex 838383 is darker gray = 131/131/131 rgb
bfbfbf is lighter gray = 191/191/191 rgb
So judging by these values, the colors vlc uses are correct and mpv seems to overwrite the values.
Since I never had a problem with the extracted subtitle colors I suspect either something changed in mplayer (with is rather unlikely since it hasn't really changed for years) or there is some problem/confusion around the dvd.
Cu Selur
Looking at the idx parameters:
size: 720x480
palette: 101010, 101010, 101010, 101010, 101010, 101010, 101010, 101010, 101010, 101010, 101010, 101010, 101010, 838383, bfbfbf, 101010
# ON: displays only forced subtitles, OFF: shows everything
forced subs: OFF
# Language index in use
langidx: 0hex 101010 is basically black = 16/16/16 rgb
hex 838383 is darker gray = 131/131/131 rgb
bfbfbf is lighter gray = 191/191/191 rgb
So judging by these values, the colors vlc uses are correct and mpv seems to overwrite the values.
Since I never had a problem with the extracted subtitle colors I suspect either something changed in mplayer (with is rather unlikely since it hasn't really changed for years) or there is some problem/confusion around the dvd.
Cu Selur
