Black color changing mugs outside color
Inside colors offered $15 each or 10 at $10 each
Yellow
Red
Pink
Orange
Green
Dark Red
 
These are not all common colors for color changing mugs. Outside black color hides your picture until heat activated. Inside colors remain the given color. Unique and different. Not offered by most retailers of personalized mugs. Many of these colors are not in the USA. 
 
These are nice gift items.