Why are glass lining color options blue and white?

The blue coloring comes from the cobalt that was added to the glass formulations a long time ago.

Usually the choice of which color to use comes down to concerns about cleaning and what particles could be left behind. If people are concerned with dark-colored particles being left on the surface, they will usually choose a white glass so they can see the particles either. If the particles are a lighter color, then you would choose a blue glass. Also, if you are going to be observing the reaction (using a vessel light) during operation, white glass tends to be a bit better in terms of being able to see what is going on inside.