What is the actual color of the Rasengan? The manga has the drawing of the Rasengan on one of the colors yellow, and the games says it is blue. I think it's yellow because I believe the manga is canon. What is the actual canon color of the Rasengan?
Strictly speaking, the canonical color of the Rasengan should be yellow, because Naruto's chakra is yellow in the manga. (Chapter 91) 


The anime changed the chakra color to blue for some reason, probably because they felt blue looked better in the animation. Games are often made to resemble the anime, not the manga, so that could be the reason they picked blue.

The yellow image in the anime that you mention is an inconsistency. They may have used the color from the manga for that image because it wasn't important for the plot.