The Rainbow Collaboration 2014 The Wild Beer Co + Toccalmatto + Indigo 7 UK breweries paired with 7 breweries from around the world and paired with one of the 7 colours of the Rainbow creating the theme of the brew. The Result…. Indigo Child This gooseberry sour beer is the offspring of an English and an Italian Parent combining flowers fruit and Somerset magical yeast. Launching at Beavertown Brewery on 13th September!