It's just your standard system monitor display thingy, right?
Have you looked at some sample config files? I checked out a couple just now, and it appears as though you are missing a color token, e.g.
TEXT
$nodename - $sysname $kernel on $machine
$stippled_hr
${color lightgrey}Uptime:$color $uptime ${color lightgrey}- Load:$color $loadavg
${color lightgrey}CPU Usage:${color #5000a0} ${cpu}% ${cpubar}
${color black}${cpugraph 000000 5000a0}
${color lightgrey}RAM Usage:$color $mem/$memmax - $memperc% $membar
${color lightgrey}Swap Usage:$color $swap/$swapmax - $swapperc% ${swapbar}
${color lightgrey}Processes:$color $processes ${color grey}Running:$color $running_processes
$color$stippled_hr
${color lightgrey}Networking:
Regarding the CPU temp indicator, 1) are you sure the physical temperature sensor is actually working, and 2) if so this is almost certainly an lm-sensors issue of some kind. Could be permissions. Try googling around with lm-sensors and your motherboard model as search terms.