adjust lightness settings in theme gen scripts

app-config/ghostty/heathland-monobiome-light.config

@@ -0,0 +1,41 @@
+# base settings
+background = #f7f3fb
+foreground = #343137
+
+selection-background = #e6e3eb
+selection-foreground = #413e44
+
+cursor-color = #413e44
+cursor-text = #e6e3eb
+
+# black
+palette = 0=#f7f3fb
+palette = 8=#d6d2da
+
+# red
+palette = 1=#db4b3d
+palette = 9=#b62920
+
+# green
+palette = 2=#4e8757
+palette = 10=#3b6a42
+
+# yellow
+palette = 3=#7f7a42
+palette = 11=#615d2f
+
+# blue
+palette = 4=#4d7ad1
+palette = 12=#345aa4
+
+# magenta (red)
+palette = 5=#a4672a
+palette = 13=#83501b
+
+# cyan (blue)
+palette = 6=#4d7ad1
+palette = 14=#345aa4
+
+# white
+palette = 7=#4e4c52
+palette = 15=#343137