The new JetStream 2.0 bloc Blue, Red, and Yellow waxes are all white. There is no way to tell them apart once they have left the packaging which is marked of course.
Over the past few years, teams had asked us to make the bloc waxes the same color so it was more difficult for prying eyes to see what they were using. For this reason, all 3 colors are white. If this is a concern, we recommend to take a blue, red, and yellow marker and make the appropriate mark on the wax to designate which one it is to avoid mixing them up. Below is the case that the wax comes in, but the bloc itself is white: