What do they look like?
All I can say is no. Just no. Nonononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononononono. They don't even look like Pokemon. Golbat's OK though.
EDIT: O,O That Magikarp looks perfect! Seriously! BTW, I'll give my opinions on all of them soon. I have a page opened that shows 'em all in alphabetical order:
http://www.hostultra.com/~mewtwofan/index.php?id=greensprites.
Abra: Looks like a demon if you look close enough.
Aerodactyl: Not bad actually. R/B one was better though.
Alakazam: It looks like it's about to throw up. You can barely see its eyes, and its *** is too small XP
Arbok: Looks like it got rolled over by a steamroller

actually i kinda like it, but it doesn't look too much like Arbok.
Arcanine: Dark and choppy. Better than that sickening looking R/B one.
Articuno: *whistles* a good amount of flaws all right, but they are unnamed.
Beedrill: Same as Articuno, but worse.
Bellsprout:
Bit too thin, head a
bit too big, kinda ties with the R/B one.
Blastoise: It has nostrils

. Its shell looks a bit screwy, but other than that, OK.
Bulbasaur: Looks a bit on the evil side :|. Not exactly shaped right.
Butterfree: Too choppy and no outlines it's wings are
HUGE.
Caterpie: Not exactly shaped right.
Chansey: Looks a bit too fat. A few unneeded pixels of shading.
Charizard: Is this supposed to be a girly-eyed Charizard with an invisible man from above pulling his tail and another one screwing his wings? And what's that fire doing on its palm?
Charmander: Its snout is a bit Farfetch'd. Wait. It isn't a snout

.
Charmeleon: It's too thin, stupid pose, small head, snout, should I go on?
Clefable: Swell actually

Clefairy: Its gaping eyes blend in with the body. Screwiness here and there.
Cloyster: Nice actually. It's face looks too big, but it could be an optical illusion.
Cubone: Its "mask" is a bit deformed.
Dewgong: See Articuno.
Diglett: Thinner Charizard eyes, and not enough dirt.
Ditto: A lot of shading errors.
Dodrio: its heads are too round. And the thing they go into is too.
Doduo: See Caterpie.
Dragonair: Just no.
Dragonite: Looks like it's from a different game X#. No. No. No. Nonononononononononono.
I'll get more tomorrow.