Possible Clues:

• Bright red often associated with sin
• Sign of wound, granted, displays colour of blood
• Will Robin's man become bright red?
• Red alert — revolution succeeds, say Communist leaders
• Red colour
• Reddish color
• Southern refined claret is a brilliant red
• Immoral shade like 5 across?
• New cartels in the red?
• Brightly coloured small mini-vehicle?