The answer to each clue below contains the word RED

-1. Discover in the act of doing something bad
-2. Go out and celebrate
-3. State of being ready to deal with a dangerous situation
-4. Item used during a special official welcome
-5. Large, cool star
-6. Special, happy and important date
-7. Seedy part of a city
-8. Unnecessary official rules and processes
-9. Sign of danger; warning
-10. Showing a net loss
-11. Something that draws attention away from the central issue
-12. International aid organization
-13. Kind of butterfly
-14. Late-night flight
-15. Traffic signal
-16. Become very angry
-17. Mars
-18. Something of little value

1. caught red-handed

2. Paint the town red

5. Red Giant Star

3. code red??

4. red carpet

11. red herring

14. red eye

So much red! And all in the right places.

16 - see red

17 - red planet

You're hot, OB!

15. red light

Yes!

8. red tape

7. Red-light district.

Yes to both!

13. red admiral

18. not worth a red cent

Well done!

10. in the red

6. a red letter day

Both good!

12. Red Cross

Absolutely!

9. Red Flag

Nicely finished, Koala!