Since the quarrel
Will bear no color for the thing he is,
Fashion it thus: that what he is, augmented,
Would run to these and these extremities.
Shakespeare
William Shakespeare (1564–1616), British dramatist, poet. Brutus, in Julius Caesar, act 2, sc. 1, l. 28-31.
Finding specious reasons to join the conspiracy, and admitting it cannot be justified (“Will bear no color”) by what Caesar has done.