feat(colours): increase contrast on owickstrom

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/87edbd74246ccdfa64503f334ed86fa04010bab9' (2023-04-12)
  → 'github:NixOS/nixpkgs/fda0d99c2cbbb5c89d8855d258cb0821bd9113ad' (2023-04-14)
• Updated input 'nur':
    'github:nix-community/NUR/8a35714f0be00235e2a1c8b759e6dc3888763d8b' (2023-04-14)
  → 'github:nix-community/NUR/c9e3bd49580c525989f6ce9803e1c5875ab8548a' (2023-04-15)

flake.lock

@@ -363,11 +363,11 @@
     },
     "nixpkgs_4": {
       "locked": {
-        "lastModified": 1681269223,
-        "narHash": "sha256-i6OeI2f7qGvmLfD07l1Az5iBL+bFeP0RHixisWtpUGo=",
+        "lastModified": 1681482634,
+        "narHash": "sha256-cT/nr3L8khEYZSGp8qqwxFH+/q4/547MfyOdSj6MhBk=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "87edbd74246ccdfa64503f334ed86fa04010bab9",
+        "rev": "fda0d99c2cbbb5c89d8855d258cb0821bd9113ad",
         "type": "github"
       },
       "original": {
@@ -458,11 +458,11 @@
     },
     "nur": {
       "locked": {
-        "lastModified": 1681454031,
-        "narHash": "sha256-JOamj7vKkFRp5mJ7FKt5dPfCmWj33sZLnBGDt15c/sc=",
+        "lastModified": 1681601319,
+        "narHash": "sha256-R/UmDcWLxks3WjA95MA2oPLgqnVN2TZHF+C5s4VaEpo=",
         "owner": "nix-community",
         "repo": "NUR",
-        "rev": "8a35714f0be00235e2a1c8b759e6dc3888763d8b",
+        "rev": "c9e3bd49580c525989f6ce9803e1c5875ab8548a",
         "type": "github"
       },
       "original": {

lib/colours/owickstrom-dark.nix

@@ -1,37 +1,37 @@
-rec {
+rec { # all dark colours are 20% darker than the bright ones
   black = {
-    bright = "#282c34";
-    dark = "#282c34";
+    bright = "#4c5363"; # "#282c34";
+    dark = "#20232a";
   };
   red = {
-    bright = "#e06c75";
-    dark = "#e06c75";
+    bright = "#e68990"; #"#e06c75";
+    dark = "#d43541";
   };
   green = {
-    bright = "#98c379";
-    dark = "#98c379";
+    bright = "#acce93"; #"#98c379";
+    dark = "#77af4e";
   };
   yellow = {
-    bright = "#e5c07b";
-    dark = "#e5c07b";
+    bright = "#eacc95"; #"#e5c07b";
+    dark = "#d9a440";
   };
   blue = {
-    bright = "#61afef";
-    dark = "#61afef";
+    bright = "#80bff2"; #"#61afef";
+    dark = "#2490e9";
   };
   magenta = {
-    bright = "#c678dd";
-    dark = "#c678dd";
+    bright = "#d193e3"; #"#c678dd";
+    dark = "#af42cf";
   };
   cyan = {
-    bright = "#56b6c2";
-    dark = "#56b6c2";
+    bright = "#77c4ce"; #"#56b6c2";
+    dark = "#3b99a5";
   };
   white = {
-    bright = "#dcdfe4";
-    dark = "#dcdfe4";
+    bright = "#e3e5e9"; #"#dcdfe4";
+    dark = "#a9b1bd";
   };
-  background = black.dark;
-  foreground = white.bright;
+  background = "#282c34"; #black.dark;
+  foreground = "#dcdfe4"; #white.bright;
   cursor = "#a3b3cc";
 }

lib/colours/owickstrom-light.nix

@@ -29,9 +29,9 @@ rec {
   };
   white = {
     bright = "#8c00ec";
-    dark = "#efefef";
+    dark = "#bfbfbf";
   };
-  background = white.dark;
+  background = "#efefef";
   foreground = "#181818";
-  cursor = "#bbbbbb";
+  cursor = "#a3b3cc";
 }