Some Of Red Colour Based Idioms:-
1. Red Letter Day:- Very Important or Memorable Day
2. In the Red:- Overdrawn (Financial Danger)
3. Red Tapism:- Extreme Formalities
4. Red Herring:- If something is a distraction from real issues
5. Red Mist:- Lose temper or self control completely
6. Red Reg to a Bull:- Make someone Angry
7. Catch red Handed:- To catch someone while he was committing crime
8. To see Red:- Get Angry
9. Red Herring:- Distract from main issue
10. Paint the town Red:- Celebrate Noisily