Why is Chelsea called the blues?

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Tags

1. #royal
2. #known
3. #chelsea
4. #simply
5. #because
6. #partly
7. #nickname
8. #blues
9. #original
10. #servicemen
11. #commonly
12. #retired
13. #pensioners
14. #white
15. #socks
16. #women
17. #changed
18. #hospital
19. #their
20. #about
21. #military
22. #reside