1. blue collar 2. true-blue 3. blue blood 4. bluestocking 5. to feel blue 6. green card 7. green light 8. green fingers (green thumb) 9. green-eyed monster 10. to look green around the gills 11. grey mat¬ter 12. grey area 13. white elephant 14. white flag 15. white collar 16. silver-tongued 17. silver screen 18. to see red 19. red alert 20. red carpet 21. red herring 22. pink collar 23. goldbrick 24. black-tie 25. blackmail 26. brown goods

A. completely loyal and faithful;
B. natural skill in making plants grow well;
C. able to give fine persuading speeches, eloquent;
D. a worker who does hard or dirty work with his hands;
E. to feel sad or depressed;
F. brain power, the power of thought;
G. jealousy;
H. parties and other social occasions at which people wear evening dress;
I. something that is big and valuable but useless or unwanted;
J. a document necessary in order to work legally in the US;
K. a person who works in offices or at professional jobs;
L. the film industry;
M. a situation of sudden great danger;
N. female office worker;
O. a worthless thing that appears to be valuable;
P. the quality of being a nobleman or noblewoman by birth;
Q. to look pale, sick;
R. a special ceremonial welcome to an important guest;
S. a sign that one accepts defeat;
T. electrical goods bought to provide entertainment, such as TVs, home computers etc.
U. a situation or subject that is difficult to deal with because it is not clear;
V. a woman who is thought to be too highly educated;
W. to be angry;
X. a fact or subject which is introduced to draw people's attention away from the main point;
Y. the practice of obtaining money by threatening to make known unpleasant facts about a person;
Z. permission to begin an action;