Hi, first of all thanks for this great program :). I've seen a spanish flag as the flag for the catalan language. I think that this is incorrect, because Catalan is speaked in more countries than Spain. So if you don't want to put a Catalan flag, you should use one of Andorra, since this is an State where the only official language is Catalan (and since I'm from Andorra, I speak Catalan, and I'm not at all spanish!). You can find the flag here:
or if you prefer the catalan one:
If you do the Catalan flag of the same style as the other flags (animated), I'll love to use it.