Songülen changed the colors to yellow and navy, from then on the iconic colors of the club. Fenerbahçe's activities were kept in secrecy until a legislation reform in 1908, when, under a new law, all football clubs had to register to exist legally. Fenerbahçe joined the Istanbul League in 1909, finishing fifth in their first year. The founding line-up included Ziya Songülen, Ayetullah Bey, Necip Okaner, Galip Kulaksızoğlu, Hassan Sami Kocamemi, Asaf Beşpınar, Enver Yetiker, Şevkati Hulusi Bey, Fuat Hüsnü Kayacan, Hamit Hüsnü Kayacan, and Nasuhi Baydar. Fenerbahçe played against the staff of the Royal Navy that occupied Istanbul during the Turkish War of Independence. Some British soldiers formed football teams that were named after the players' speciality, for example Essex Engineers, Irish Guards, Grenadiers, and Artillery. These teams played against each other and against local football teams in Istanbul. Fenerbahçe won many of these matches. The Turkish Football Federation founded a professional nationwide league in 1959, which continues today under the name of the Süper Lig. Fenerbahçe won the first tournament, beating Galatasaray 4–1 on aggregate. The next year, Fenerbahçe participated in the UEFA European Cup for the first time. They qualified through a 4–3 win over Csepel SC. They lost their first-round game to OGC Nice 1–5 in a playoff game after drawing on aggregate. They were also runners-up three times. In the 1966–67 Balkans Cup (a competition set up for Eastern European clubs from Albania, Bulgaria, Greece, Romania, Turkey, and Yugoslavia that existed between the 1960–61 and 1993–94 seasons), Fenerbahçe won the cup after three matches against Greek club AEK Athens, making them the first Turkish club to win a non-domestic competition. This success would remain unparalleled by a Turkish club until Sarıyer and Samsunspor won the cup many years later in the 1990s, when the competition lost much of its original popularity. Later years The 1970s saw Fenerbahçe win four more league titles. Fenerbahçe won three titles in the 1980s, while the rivals Galatasaray and Beşiktaş dominated the Turkish League during the 1990s, combining to win nine out of 10 league titles. Fenerbahçe's only Turkish League success during the 1990s came in the 1995–1996 season under Carlos Alberto Parreira. Fenerbahçe won the league title in 2001, denying Galatasaray a fifth consecutive title. They followed up the next season with a runners-up place behind Galatasaray with new coach Werner Lorant. The next season, however, did not go