Macbeth 2.3 Performance: Macbeth, Lines 105-115a

The transcript describes a scene of violent love and reason, focusing on Duncan's murder with vivid imagery. It highlights the murderers' actions, steeped in their trade's colors, and questions who could refrain from acting out of love and courage.

Discuss the significance of the phrase 'steeped in the colors of their trade' in relation to the murderers.

What does the speaker suggest about love and courage in the lines provided?