From Sofia, Bulgaria this past weekend. Patriarch Kyril visited the Patriarch of Bulgaria and a joint Liturgy was held in the massive St. Alexander Nevsky Cathedral in Sofia, Bulgaria. I saw that the Bulgarians wore Greek style phelons and both clergy and hierarchs of the Bulgarians wore white, as we do during Paschaltide, while the Russians were wearing red except for Patriarch Kyril, who wore white. The Bulgarian Patriarch must be very old as he looked rather infirm. http://www.youtube.com/watch?v=9VptEYtOrHo
Most Bulgarian clergy and hierarchs wore white, but from what I see some were wearing red. As for the phelons Greek style phelons are generally more widespread in Bulgaria, although many priests would wear Russian style phelonion.
As a whole there are no liturgical colors in the sense they have in the Russian tradition - this color for this feast, that color for that feast, etc. The only exception is that black or dark purple should be worn for services during weekdays of the Great Lent. During Paschaltide all kind of vestment colors may be seen in Bulgaria - white/golden and red are the most popular of course, but also blue and green. Even for Saturdays and Sunday of Lent all colors might be seen - white, golden, red, blue, green.