Which color represents velocity? Which color represents acceleration?

Is the red ball speeding up or slowing down when the velocity and acceleration vectors are pointing in the same direction? Is the red ball speeding up or slowing down when the velocity and acceleration vectors are pointing in opposite directions? When you drag the red ball across the screen - from a stopped/standing position - in any direction, which vector shows up first? What does this mean in terms of the motion of the ball? In uniform circular motion, in which direction is the velocity vector pointing?

In uniform circular motion, in which direction is the acceleration vector pointing? What is another example of a two-body system that this circular motion could represent?