diff --git a/src/input.ts b/src/input.ts
index d5062461..1841e1f3 100644
--- a/src/input.ts
+++ b/src/input.ts
@@ -8,7 +8,7 @@ export interface Inputs {
     description: string
     title: string
     image: string
-    color: number
+    color?: number
     url: string
     username: string
     avatar_url: string
@@ -55,6 +55,8 @@ export function getInputs(): Inputs {
     const nocontext = nodetail || stob(core.getInput('nocontext'))
     const noprefix = nodetail || stob(core.getInput('noprefix'))
 
+    const colorParsed = parseInt(core.getInput("color"))
+
     const inputs: Inputs = {
         webhooks: webhooks,
         status: core.getInput('status').trim().toLowerCase(),
@@ -62,7 +64,7 @@ export function getInputs(): Inputs {
         description: core.getInput('description').trim(),
         title: (core.getInput('title') || core.getInput('job')).trim(),
         image: core.getInput('image').trim(),
-        color: parseInt(core.getInput('color')),
+        color: isNaN(colorParsed) ? undefined : colorParsed,
         url: core.getInput('url').trim(),
         username: core.getInput('username').trim(),
         avatar_url: core.getInput('avatar_url').trim(),
diff --git a/src/main.ts b/src/main.ts
index 1fbe4fbf..22dff85d 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -51,7 +51,7 @@ export function getPayload(inputs: Readonly<Inputs>): Object {
     const eventDetail = formatEvent(eventName, payload)
 
     let embed: { [key: string]: any } = {
-        color: inputs.color || statusOpts[inputs.status].color
+        color: inputs.color === undefined ? statusOpts[inputs.status].color : inputs.color
     }
 
     if (!inputs.notimestamp) {
diff --git a/test/input.test.ts b/test/input.test.ts
index 0c4dbb7e..15b9120a 100644
--- a/test/input.test.ts
+++ b/test/input.test.ts
@@ -31,7 +31,7 @@ describe("getInputs()", () => {
         expect(got.description).toBe('')
         expect(got.title).toBe('github actions')
         expect(got.image).toBe('')
-        expect(got.color).toBeFalsy()
+        expect(got.color).toBe(undefined)
         expect(got.username).toBe('')
         expect(got.avatar_url).toBe('')
     })
@@ -75,6 +75,18 @@ describe("getInputs()", () => {
         expect(got.noprefix).toBe(true)
     })
 
+    test("color 0 is accepted", () => {
+        process.env['INPUT_COLOR'] = '0'
+        const got = getInputs()
+        expect(got.color).toBe(0)
+    })
+    
+    test("invalid color is defaulted to undefined", () => {
+        process.env['INPUT_COLOR'] = 'qwertyuiop'
+        const got = getInputs()
+        expect(got.color).toBe(undefined)
+    })
+
     test("all (job)", () => {
         // this pattern is rare because we have default value
         // for INPUT_TITLE, defined in action.yml, so this pattern
diff --git a/test/main.test.ts b/test/main.test.ts
index 8c4ab5a6..b9508ba0 100644
--- a/test/main.test.ts
+++ b/test/main.test.ts
@@ -41,7 +41,7 @@ describe('getPayload(Inputs)', () => {
         content: '',
         title: '',
         image: '',
-        color: NaN,
+        color: undefined,
         url: '',
         username: '',
         avatar_url: ''
@@ -452,6 +452,91 @@ describe('getPayload(Inputs)', () => {
         expect(getPayload(inputs)).toStrictEqual(want)
     })
 
+    test("no color defaults to job status color", () => {
+        const inputs: Inputs = {
+            ...baseInputs,
+            status: "failure"
+        }
+        const want = {
+            embeds: [{
+                color: 0xCB2431,
+                timestamp: expect.any(String),
+                title: 'Failure',
+                fields: [
+                    {
+                        name: 'Repository',
+                        value: '[Codertocat/Hello-World](https://githubactions.serverurl.example.com/Codertocat/Hello-World)',
+                        inline: true
+                    },
+                    {
+                        name: 'Ref',
+                        value: 'refs/tags/simple-tag',
+                        inline: true
+                    },
+                    {
+                        name: 'Event - push',
+                        value: 'mocked format event',
+                        inline: false
+                    },
+                    {
+                        name: 'Triggered by',
+                        value: 'Codertocat',
+                        inline: true
+                    },
+                    {
+                        name: 'Workflow',
+                        value: "[push-ci](https://githubactions.serverurl.example.com/Codertocat/Hello-World/actions/runs/123123)",
+                        inline: true
+                    }
+                ]
+            }]
+        }
+        expect(getPayload(inputs)).toStrictEqual(want)
+    })
+
+    test("color 0 is accepted", () => {
+        const inputs: Inputs = {
+            ...baseInputs,
+            color: 0,
+        }
+        const want = {
+            embeds: [{
+                color: 0,
+                timestamp: expect.any(String),
+                title: 'Success',
+                fields: [
+                    {
+                        name: 'Repository',
+                        value: '[Codertocat/Hello-World](https://githubactions.serverurl.example.com/Codertocat/Hello-World)',
+                        inline: true
+                    },
+                    {
+                        name: 'Ref',
+                        value: 'refs/tags/simple-tag',
+                        inline: true
+                    },
+                    {
+                        name: 'Event - push',
+                        value: 'mocked format event',
+                        inline: false
+                    },
+                    {
+                        name: 'Triggered by',
+                        value: 'Codertocat',
+                        inline: true
+                    },
+                    {
+                        name: 'Workflow',
+                        value: "[push-ci](https://githubactions.serverurl.example.com/Codertocat/Hello-World/actions/runs/123123)",
+                        inline: true
+                    }
+                ]
+            }]
+        }
+        expect(getPayload(inputs)).toStrictEqual(want)
+    })
+
+
     test("username", () => {
         const inputs: Inputs = {
             ...baseInputs,