diff --git a/.github/workflows/daily-file-diet.lock.yml b/.github/workflows/daily-file-diet.lock.yml
index d45972f966..b2a6de59a0 100644
--- a/.github/workflows/daily-file-diet.lock.yml
+++ b/.github/workflows/daily-file-diet.lock.yml
@@ -10572,6 +10572,7 @@ jobs:
                                   options {
                                     id
                                     name
+                                    color
                                   }
                                 }
                               }
@@ -10667,8 +10668,8 @@ jobs:
                         if (!option) {
                           try {
                             const allOptions = [
-                              ...field.options.map(o => ({ name: o.name, description: "" })),
-                              { name: String(fieldValue), description: "" },
+                              ...field.options.map(o => ({ name: o.name, description: "", color: o.color || "GRAY" })),
+                              { name: String(fieldValue), description: "", color: "GRAY" },
                             ];
                             const createOptionResult = await github.graphql(
                               `mutation($fieldId: ID!, $fieldName: String!, $options: [ProjectV2SingleSelectFieldOptionInput!]!) {
diff --git a/.github/workflows/go-file-size-reduction.campaign.g.lock.yml b/.github/workflows/go-file-size-reduction.campaign.g.lock.yml
index 0a4c933860..29ee83b8c7 100644
--- a/.github/workflows/go-file-size-reduction.campaign.g.lock.yml
+++ b/.github/workflows/go-file-size-reduction.campaign.g.lock.yml
@@ -8129,6 +8129,7 @@ jobs:
                                   options {
                                     id
                                     name
+                                    color
                                   }
                                 }
                               }
@@ -8224,8 +8225,8 @@ jobs:
                         if (!option) {
                           try {
                             const allOptions = [
-                              ...field.options.map(o => ({ name: o.name, description: "" })),
-                              { name: String(fieldValue), description: "" },
+                              ...field.options.map(o => ({ name: o.name, description: "", color: o.color || "GRAY" })),
+                              { name: String(fieldValue), description: "", color: "GRAY" },
                             ];
                             const createOptionResult = await github.graphql(
                               `mutation($fieldId: ID!, $fieldName: String!, $options: [ProjectV2SingleSelectFieldOptionInput!]!) {
diff --git a/pkg/workflow/js/update_project.cjs b/pkg/workflow/js/update_project.cjs
index d069e1d8be..99008ef3e6 100644
--- a/pkg/workflow/js/update_project.cjs
+++ b/pkg/workflow/js/update_project.cjs
@@ -609,6 +609,7 @@ async function updateProject(output) {
                       options {
                         id
                         name
+                        color
                       }
                     }
                   }
@@ -718,8 +719,8 @@ async function updateProject(output) {
               try {
                 // Build options array with existing options plus the new one
                 const allOptions = [
-                  ...field.options.map(o => ({ name: o.name, description: "" })),
-                  { name: String(fieldValue), description: "" },
+                  ...field.options.map(o => ({ name: o.name, description: "", color: o.color || "GRAY" })),
+                  { name: String(fieldValue), description: "", color: "GRAY" },
                 ];
 
                 const createOptionResult = await github.graphql(
diff --git a/pkg/workflow/js/update_project.test.cjs b/pkg/workflow/js/update_project.test.cjs
index 904f75f23b..9a7d2214cb 100644
--- a/pkg/workflow/js/update_project.test.cjs
+++ b/pkg/workflow/js/update_project.test.cjs
@@ -408,6 +408,73 @@ describe("updateProject", () => {
     expect(updateCall).toBeDefined();
   });
 
+  it("creates a new option in single select field with colors for existing options", async () => {
+    const projectUrl = "https://github.com/orgs/testowner/projects/60";
+    const output = {
+      type: "update_project",
+      project: projectUrl,
+      content_type: "issue",
+      content_number: 16,
+      fields: { Status: "Closed - Not Planned" },
+    };
+
+    queueResponses([
+      repoResponse(),
+      viewerResponse(),
+      orgProjectV2Response(projectUrl, 60, "project-status"),
+      linkResponse,
+      issueResponse("issue-id-16"),
+      existingItemResponse("issue-id-16", "item-status"),
+      fieldsResponse([
+        {
+          id: "field-status",
+          name: "Status",
+          options: [
+            { id: "opt-todo", name: "Todo", color: "GRAY" },
+            { id: "opt-in-progress", name: "In Progress", color: "YELLOW" },
+            { id: "opt-done", name: "Done", color: "GREEN" },
+            { id: "opt-closed", name: "Closed", color: "PURPLE" },
+          ],
+        },
+      ]),
+      // Response for updateProjectV2Field mutation
+      {
+        updateProjectV2Field: {
+          projectV2Field: {
+            id: "field-status",
+            options: [
+              { id: "opt-todo", name: "Todo" },
+              { id: "opt-in-progress", name: "In Progress" },
+              { id: "opt-done", name: "Done" },
+              { id: "opt-closed", name: "Closed" },
+              { id: "opt-closed-not-planned", name: "Closed - Not Planned" },
+            ],
+          },
+        },
+      },
+      updateFieldValueResponse(),
+    ]);
+
+    await updateProject(output);
+
+    // Find the updateProjectV2Field mutation call
+    const updateFieldCall = mockGithub.graphql.mock.calls.find(([query]) => query.includes("updateProjectV2Field"));
+    expect(updateFieldCall).toBeDefined();
+
+    // Verify that the mutation includes color for all options
+    const options = updateFieldCall[1].options;
+    expect(options).toHaveLength(5); // 4 existing + 1 new
+
+    // Check that all existing options have their colors preserved
+    expect(options[0]).toEqual({ name: "Todo", description: "", color: "GRAY" });
+    expect(options[1]).toEqual({ name: "In Progress", description: "", color: "YELLOW" });
+    expect(options[2]).toEqual({ name: "Done", description: "", color: "GREEN" });
+    expect(options[3]).toEqual({ name: "Closed", description: "", color: "PURPLE" });
+
+    // Check that the new option has a default color
+    expect(options[4]).toEqual({ name: "Closed - Not Planned", description: "", color: "GRAY" });
+  });
+
   it("warns when a field cannot be created", async () => {
     const projectUrl = "https://github.com/orgs/testowner/projects/60";
     const output = {