Add custom themes

package.json

@@ -35,6 +35,7 @@
     "@angular/router": "^18.0.6",
     "bootstrap-icons": "^1.11.3",
     "bottleneck": "^2.19.5",
+    "culori": "^4.0.1",
     "dayjs": "^1.11.11",
     "electron-unhandled": "^5.0.0",
     "electron-updater": "^6.2.1",
@@ -59,6 +60,7 @@
     "@angular/cli": "^18.0.7",
     "@angular/compiler-cli": "^18.0.6",
     "@angular/language-service": "^18.0.6",
+    "@types/culori": "^2.1.1",
     "@types/fs-extra": "^11.0.4",
     "@types/lodash": "^4.17.6",
     "@types/node": "^18.16.0",