Question: Who served as junior minister being known for his colorful ties and waistcoasts under the oldest living Prime Minister of the United Kingdom? 

Context paragraphs:
Josip Manolić: Josip Manolić (] ; born 22 March 1920) is a Croatian politician and former high-ranking official of the State Security Administration (UDBA or UDSA) who was the Prime Minister of Croatia from 24 August 1990 to 17 July 1991.  Croatia formally declared independence during his term, on 25 June 1991.  Having taken office as Prime Minister at the age of 70 and having left the office at the age of 71, he is the oldest person to date to have served as Prime Minister of Croatia.  Manolić is also the oldest currently living former prime minister at the age of and the longest-lived holder of the office.  Following his brief term as Prime Minister he served as the first Speaker of the Chamber of Counties, the upper house of the Croatian Parliament, from 1993 until 1994.

List of Prime Ministers of the United Kingdom: The Prime Minister of the United Kingdom is the head of the Government of the United Kingdom, and chairs Cabinet meetings.  There is no specific date when the office of Prime Minister first appeared, as the role was not created but rather evolved over a period of time.  The term was used in the House of Commons in 1805 and it was certainly in parliamentary use by the 1880s, and in 1905 the post of Prime Minister was officially given recognition in the order of precedence.  Modern historians generally consider Sir Robert Walpole, who led the government of Great Britain from 1721 to 1742, as the first Prime Minister.  Walpole is also the longest-serving Prime Minister by this definition.  However, Sir Henry Campbell-Bannerman was the first Prime Minister and Margaret Thatcher the longest-serving Prime Minister to have been officially referred to as such.

Swedish governmental line of succession: The Swedish constitution of 1974 allows the Prime Minister of Sweden to appoint one of the Ministers in the cabinet as Deputy Prime Minister ("biträdande statsminister", also unofficially known as "vice statsminister", "Vice Prime Minister"), in case the Prime Minister for some reason is prevented from performing his or her duties.  However, if a Deputy Prime Minister has not been appointed, the Minister in the cabinet who has served the longest time (and if there are several with equal experience the one who is oldest) takes over as head of government.  Note that the person acting as Prime Minister does not do so on a permanent basis: if a Prime Minister dies, resigns or loses a vote of confidence in the Riksdag, the Speaker of the Riksdag will then confer with the parties of the Riksdag and propose a new Prime Minister, who must be tolerated by a majority of the Riksdag.  If the Prime Minister has resigned or lost a vote of confidence, he or she will remain the head of a government "ad interim" until the new Prime Minister assumes his or her office.  The only case where the governmental line of succession becomes relevant is when the Prime Minister dies (upon which the person next in the line of succession serves as the head of a government "ad interim") or when the Prime Minister is on leave or for any other reason incapable of serving, but still remains in office.  This might be compared to the Presidential line of succession in the United States, where the person next in line assumes the Presidency throughout the remainder of the term if the President dies, resigns or is impeached.

Prime Minister's Official Spokesperson: The Prime Minister's Official Spokesperson or alternatively Prime Minister's Official Spokesman/Spokeswoman is a position in the United Kingdom's Civil Service, located in the Prime Minister's Office in 10 Downing Street and used by the British Prime Minister to convey information to the public.  The Prime Minister's Official Spokesperson usually addresses a small group of press and media correspondents, known as lobby correspondents, each morning to deliver statements on current events on behalf of the Prime Minister.

List of Prime Ministers of Croatia by longevity: This is a list of Prime Ministers of Croatia since the first multi-party elections in 1990, in order of longevity.  There are currently twelve prime ministers on the list and ten living prime ministers.This list is in decreasing order and is correct as of none }} .  The longest-lived and oldest living former prime minister is Josip Manolić (born 22 March 1920).

Eric Forth: Eric Forth (9 September 1944 – 17 May 2006) was a British politician.  He was the Conservative Member of the European Parliament (MEP) for Birmingham North, then Member of Parliament (MP) for Mid Worcestershire and finally Bromley and Chislehurst at his death.  He served as a junior minister in the governments of Margaret Thatcher and John Major between 1988 and 1997.  In his obituaries, he was described as "colourful", "flamboyant", "provocative" and a "right-wing libertarian".  He was noted for his colourful ties and waistcoats, sideburns, and jewellery. ."

John Major: Sir John Major, {'1': ", '2': ", '3': ", '4': "} (born 29 March 1943) is a British politician who was Prime Minister of the United Kingdom and Leader of the Conservative Party from 1990 to 1997.  He served as Foreign Secretary and then Chancellor of the Exchequer in the Thatcher Government from 1989 to 1990, and was the Member of Parliament (MP) for Huntingdon from 1979 until he retired in 2001.  Since Margaret Thatcher's death in 2013, he is the oldest living former Prime Minister.

Javier Pérez de Cuéllar: Javier Felipe Ricardo Pérez de Cuéllar Guerra KCMG (] ; born January 19, 1920) is a Peruvian diplomat who served as the fifth Secretary-General of the United Nations from January 1, 1982 to December 31, 1991.  He ran unsuccessfully against Alberto Fujimori for President of Peru in 1995 and following Fujimori's resignation over corruption charges, he was Prime Minister and Minister of Foreign Affairs from November 2000 until July 2001.  In September 2004, he stepped down from his position as Peru's Ambassador to France, where he formerly resided.  He is also a member of the Club de Madrid, a group of more than 100 former Presidents and Prime Ministers of democratic countries, which works to strengthen democracy worldwide.  At age 97 , Pérez de Cuéllar is currently both the oldest living former Peruvian prime minister and Secretary General of the United Nations.

Atal Bihari Vajpayee: Atal Bihari Vajpayee (born 25 December 1924) is an Indian politician who was the 10th Prime Minister of India, first for 13 days in 1996 and then from 1998 to 2004.  A leader of the Bharatiya Janata Party (BJP), he is the first Prime Minister from outside the Indian National Congress party to serve a full five-year term.  At age 92 , Vajpayee is currently the oldest living former India Prime Minister.

Gerard Newe: Dr. Gerard Newe, OBE (1907–1982), was the first Roman Catholic to be appointed a minister in the Government of Northern Ireland.  He was appointed on 27 October 1971 as a Minister of State (i.e. junior minister) in the Prime Minister of Northern Ireland's Department.  Dr. Newe was appointed even though he was not an MP.  Brian Faulkner, then Prime Minister, appointed him to advise on matters concerning the Roman Catholic community.  This was widely viewed as an attempt to improve community relations and encourage the Social Democratic and Labour Party (SDLP) to return to the parliament.

Supporting paragraphs: Eric Forth John Major
Answer: Eric Forth