You've been drinking wrong for years. According to science , depending on what you're consuming, your mug color should change accordingly.
Yellow:
The best color to bring out the lemon-lime flavor in soda.
Orange:
The best color to make hot chocolate taste divine.
Blue:
The best color for quenching thirst with cold drinks.
Pink:
The best color to enhance the flavor of sugary refreshments.
All data courtesy of Discovery.