Orange:knock you out, Brown:give you a burst of energy, white:no effect, Black: poisonous, red: poisonous, Yellow:poisonous, Blue:no effect, Purple:poisonous.
The Lake (Warning Spoiler)
Ok eventually you will travel into a jungle
that's behind a waterfall. After you get far
enough you will get to a part with a beach on a
lake. Keith will say something about thinking
about how to get across the lake. You'll have to
travel back to the cave. Keith will get the idea
that night. Next time you go up there bring at
least 12 logs and 12 ropes (preferably more it's
hard to build). When you go back there you can
build a raft to get across!
To keep you and Skye alive you should always
have at least one spear. I suggest having more
than one though. You can get spears by using a
sharpened stone with a wood stick or bamboo.
Catch fish every day on the game because the
next day you can eat a lot of fish. Don't go
traveling to deep unless you're at full food,
water and strength.