1st test:
Normal
nicks: 609 palettesize: 4 background: 1:000000 : 3:009300 7:007FFC 15:D2D2D2 52:0000FF

After Alt+k+Cancel
nicks: 609 palettesize: 4 background: 1:000000 : 3:009300 7:007FFC 15:D2D2D2 52:0000FF
Colors HAVE changed.

After Alt+k+Ok
nicks: 609 palettesize: 4 background: 1:000000 : 3:009300 7:007FFC 15:D2D2D2 52:0000FF
Colors HAVE changed.

2nd test:
7 $false 15 $true 2 $false 54 $false 6 $false 52 $false 7 $false 3 $false

My rules:
[cnicks]
n0=$me,7,,,1,1,0,0,0,0
n1=,99,,,1,1,0,1,0,1
n2=,2,.!,,0,0,0,2,0,0
n3=,54,~,,0,0,0,2,0,0
n4=,6,&,,0,0,0,2,0,0
n5=,52,@,,0,0,0,2,0,0
n6=,7,%,,0,0,0,2,0,0
n7=,3,+,,0,0,0,2,0,0