Colorable Imitation
The Cyclopedic Law Dictionary · Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
The Cyclopedic Law Dictionary
As applied to trademark (q. v.), colorable imitation is such a close or ingenious imitation as to be calculated to deceive ordinary persons.
L. R. 5 H. L., at page 519.