Como eu sou burro!
apt-get install gnome-themes-extras
Esse pacote contem o tema Darklooks que eu usei.
A configuração do conky é a seguinte:
#avoid flicker
double_buffer yes
#own window to run simultanious 2 or more conkys
own_window yes
own_window_transparent no
own_window_type normal
own_window_hints undecorate,sticky,skip_taskbar,skip_pager
#borders
draw_borders no
border_margin 1
#shades
draw_shades no
#position
gap_x 90
gap_y 6
alignment bottom_right
#behaviour
update_interval 1
#colour
default_color 8f8f8f
#default_shade_color 000000
own_window_colour 262626
#font
use_xft yes
xftfont bauhaus:pixelsize=10
#to prevent window from moving
use_spacer no
minimum_size 1100 0
TEXT
$alignc ${voffset -1} Cpu: ${color e0e0e0}${font}${cpu}% ${color} Mem: ${color e0e0e0}${font}${mem} ${color} | ${color} Up: ${color e0e0e0}${font}${uptime_short}${color} | ${color} Net: ${color e0e0e0}${font}${downspeed eth0} Kb/s ${color} ${totaldown eth0} downloaded${color} | ${color} ${color e0e0e0}${upspeed eth0} Kb/s ${color} ${totalup eth0} uploaded${color} | ${color}Root: ${color e0e0e0}${font}${fs_free /} ${color} Home: ${color e0e0e0}${font}${fs_free /home} ${color} | ${color} ${color} Email: ${color e0e0e0}${execi 300 python ~/.scripts/gmail.py} | ${color} Weather: ${color e0e0e0} ${execi 3600 perl ~/.scripts/weather.pl BRXX2337 c c} ${color} | ${color}