Both.
American English - favorite, color
British English - favourite, colour
2012年6月6日
2
4
2
Both are correct! But stay consistent.
Favourite colour = correct
Favorite color = correct
BUT
Favourite color / Favorite colour = completely wrong. Don't mix them.
2012年6月6日
0
2
1
The first variant is America English and the second one is British English. They are all correct.