Greetings all!
Bottom-line problem:
Vobsubs goes semi-transparent on me:
Sample1:
Sample2:
It only happens on the DVD-ripped standard 'all-yellow' subtitles, kyun :<
Basically, I just use that aforementioned build without any additional codecs to view my .mkv files. (Too noob to compile anything myself >.<) I'm on a MacBook, with OS X version 10.6.8, 2.4GHz Intel Core 2 Duo.
Any advice on this one guys?

Should I get any MPlayer codecs, or should I tweak my current version with some commands/built-in options? Do ask if I need to provide more information on the matter / my specs.
(Unrelated: Any built-in options that provides noteworthy visual improvement? i.e I have both postprocessing and deinterlacing turned off. Will turning them on improve anything visually? (Viewing purpose only) I apologise for these potentially silly questions, I just wish for a top notch anime experience
)
* I might also add that the subtitles become opaque and filled with yellow when played in VLC. I watch my anime in MPlayer though, so better hope for a solution :< *