true to (one's) colors

Unfailingly loyal. Don't worry, the enemy will not be able to sway Richard—he is true to his colors.

Name	Pronounced	Usage
Anthony	AN-thə-nee, AN-tə-nee	English
Pietrina	-	Italian
Jeni	JEN-ee	English (Modern)
Proctor	['prɔktə]
Anat (1)	-	Near Eastern Mythology
Candida	KAN-di-də (English)	Late Roman, English