Black and blue

Colors tend to be charged with political and religious symbolism in northern Ireland. The "black north" that Stephen thinks of is an expression applied to the Protestant character of the whole region, and "true blue" evokes the Scottish settlers of the 17th century.

John Hunt 2012

Logo of the Royal Black Institution. Source: Wikipedia.

The St. Andrew's cross on the Scottish national flag.

The flag of the Orange Order, which incorporates a St. George's cross and the purple star of the Williamite forces. Source: Wikimedia Commons.