Reported via the Google Web Search Help forums, Google Hungry's web site yesterday was sporting a logo for Hungary's National Day, which was on March 15th. The Google Doodle reportedly had the wrong logo.
Here is the Google Doodle as shown on Google Hungary's web site yesterday:
As you can see, the colors in this cockade is green to white to red, from the inside out. But the Hungarian cockade is red to white to green. Here is a picture of it:
The one Google displayed was the Italian cockade.
Forum discussion at Google Web Search Help.