The KayTee hay I get in the typical bag is delicious meadow grass. I live in fertile Eastern NC so we have a better selection of hay due to all of the farms around here and I haven't been disappointed this year. I even get these bags from WalMart. I have had horses my entire life so I know what good hay vs. bad hay looks like, smells like and even sounds like.
I have NEVER gotten a good bag of OxBow. It's always yellow, stiff, straw-like nonsense that my ladies won't touch and I pay almost three times the amount of KayTee hay. However, my number one preference for good hay is taken straight from the horses' mouth (well, sort of). The hay my gelding eats at his farm in Charlotte, NC is also deliciously sweet and fresh hay, so when I'm home, I get small bales for free.
I'd also like to point out that considering the dry nature of hay, I'd be interested to know if it's even possible to dye hay... I'm gonna have to go ahead and guess that it isn't. I don't know about the rest of KayTee products but their hay is really just fine.