scheme: don't weigh lightness for picking colours

Cause material makes them all similar lightness anyways

scheme/gen-scheme.fish

@@ -10,7 +10,7 @@ contains -- "$argv[2]" light dark && set -l theme $argv[2] || set -l theme dark
 set -l variants vibrant tonalspot expressive fidelity fruitsalad rainbow neutral content monochrome
 
 # Generate colours
-set -l colours (okolors $img -k 14)
+set -l colours (okolors $img -k 14 -w 0)
 for variant in $variants
     mkdir -p $src/../data/schemes/dynamic/$variant
     $src/autoadjust.py $theme $variant $colours > $src/../data/schemes/dynamic/$variant/$theme.txt