Fix CloudFront domain configuration and add missing color definitions

- Configure CloudFront to accept filamenteka.rs with ACM SSL certificate
- Add Cloudflare Transform Rule for Host header rewriting
- Fix Matte Grass Green hex code (#7CB342 -> #61C680)
- Add PLA Wood colors: Ochre Yellow, White Oak, Clay Brown
- Add script for managing color definitions in database

terraform/cloudfront-frontend.tf

@@ -159,3 +159,26 @@ resource "cloudflare_record" "frontend_www" {
   proxied = true # Enable Cloudflare proxy for SSL and caching
   comment = "CloudFront distribution for frontend (www)"
 }
+
+# Cloudflare Transform Rule to rewrite Host header for CloudFront
+resource "cloudflare_ruleset" "frontend_host_header_rewrite" {
+  count   = var.domain_name != "" && var.cloudflare_api_token != "" ? 1 : 0
+  zone_id = data.cloudflare_zone.domain[0].id
+  name    = "Rewrite Host header for CloudFront"
+  kind    = "zone"
+  phase   = "http_request_late_transform"
+
+  rules {
+    action = "rewrite"
+    expression = "(http.host eq \"${var.domain_name}\" or http.host eq \"www.${var.domain_name}\")"
+    description = "Rewrite Host header to CloudFront domain"
+
+    action_parameters {
+      headers {
+        name      = "Host"
+        operation = "set"
+        value     = aws_cloudfront_distribution.frontend.domain_name
+      }
+    }
+  }
+}