I just got a new months worth of Phentermine 37.5 (which I get directly form my doctor, not the pharmacy). It is a different color than my previous prescription. It looks exactly like the Phentermine pill image that you have on the pill Identifier (for number and letter: 5030 V), however it is not white and blue. This new Rx is light blue with the darker blue specs instead of the white pill/blue specs. Is it normal for the color to be different the next prescription fill?