You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Newcastle_upon_Tyne

Context:
ITV Tyne Tees was based at City Road for over 40 years after its launch in January 1959. In 2005 it moved to a new facility on The Watermark business park next to the MetroCentre in Gateshead. The entrance to studio 5 at the City Road complex gave its name to the 1980s music television programme, The Tube. BBC North East and Cumbria is located to the north of the city on Barrack Road, Spital Tongues, in a building known, as the result of its colouring, as the Pink Palace. It is from here that the Corporation broadcasts the Look North television regional news programme and local radio station BBC Radio Newcastle.

Question:
Why is the building on Spital Tongues known as the Pink Palace?

result of its colouring