Blue sway bar bushings

[Conley79]

I have a question just bought a 1999 Chevy Tahoe limited and I'm just learning how rare and desired they are, everywhere I go people ask me about a truck that is almost twenty years old but don't look it. But my question is, did that model come from the factory with blue sway bar bushing? When I looked all of the suspension bushings are blue. I'm replacing one that was busted and I want to go back with what came on the truck. If this can be anwsered for me it would be much appreciated thank you.