Is Isopure allowed during the 1st phase of clear liquids?

Clear Isopure is, not the shake type.

Yup...the clear stuff is. (And it is NAS-TY! lol.) If you can find it, try the Syntax powders. You have to mix them, but so far I like them all. (Admittedly haven't tried the fuzzy navel, as I don't like peach flavored stuff.)

Does that mean the flavored kind is alright even though it has color to it?

The Fuzzy Navel nectar is like orange drink, it isn't peach flavored.

Does that mean the flavored kind is alright even though it has color to it?

Yes. "Clear" means you can see through it, like tea, not opaque, like milk.

Isopure + is MUCH MUCH MUCH better than the regular Isopure. Give it a shot. It comes in fruit punch or grape. It does not have the slimy flavor of the regular Isopure.