if you changed it and nothing is wrong with it I wouldn't worry clutch fluid always seems to get dirty the fastest. If you really want it clean I guess you can drain it again wipe it out and bleed it till it clear again maybe there's just a lotta gunk in those lines.
http://www.hadesomega.info -car specz and movies 95 Eclipse RS | 76' 280Z | 89' MR2 | 99 Neon | 91 Zephyr Who sez FF can't drift?