Pakistan International Airlines-PIA(Karachi) appears to have modified their colour scheme again.In 1999 their colour scheme was a White fuselage with a Green tail with a flowers motif.
Photo © Juan Rodriguez
In 2000 they kept the White fuselage and the Green tail but eliminated the flowers motif from the tail.
Photo © Stephen Wilcox
For 2001 they appear to be going back to the Green underside with large titles(only on 747s) and Green tail(a bit like Air India going back to their old colour scheme).
Photo © Konstantin von Wedelstaedt
p.s the weird part is I just mailed the airlines MD today requesting him to choose one of the two schemes or opt for a complete new look as the multiple styles being sported by PKs aircraft gave the company a bad image, glad thats been decided now