Answer: blau

AnswerCrossword Clue
BLAU

A color, in Koln

BLAU

Blue: German.

BLAU

Blue: Ger.

BLAU
Blue, in Berlin.
BLAU
Blue, in Leipzig
BLAUType of oil gas
BLAUSky's color, in Bonn
BLAUBlue, in Bonn
BLAUBlue, in Bremen
BLAUBlue, to Dürer
BLAUBlue, to Bismarck
BLAUBlue, to Wilhelm
BLAUBlue in Berlin
BLAUDanube's color, to a Berliner
BLAUThe Danube to Strauss
BLAUInnsbruck indigo
BLAUColor of der Ozean