diff --git a/js-api-spec/deprecations.node.test.ts b/js-api-spec/deprecations.node.test.ts
index b0e649f49..a1df09e33 100644
--- a/js-api-spec/deprecations.node.test.ts
+++ b/js-api-spec/deprecations.node.test.ts
@@ -4,7 +4,29 @@
 
 import fs from 'fs';
 import yaml from 'js-yaml';
-import {deprecations, Deprecation, Version} from 'sass';
+import {deprecations, renderSync, Deprecation, Version} from 'sass';
+import {captureStdio} from './utils';
+
+describe('a warning from the JS API', () => {
+  it('is emitted with no flags', () => {
+    const stdio = captureStdio(() => {
+      renderSync({
+        data: 'a { b: c; }',
+      });
+    });
+    expect(stdio.err).toContain('legacy-js-api');
+  });
+
+  it('is not emitted when deprecation silenced', () => {
+    const stdio = captureStdio(() => {
+      renderSync({
+        data: 'a { b: c; }',
+        silenceDeprecations: [deprecations['legacy-js-api']],
+      });
+    });
+    expect(stdio.err).toBe('');
+  });
+});
 
 describe('deprecation type', () => {
   const deprecationsMap = deprecations as unknown as {
diff --git a/js-api-spec/deprecations.test.ts b/js-api-spec/deprecations.test.ts
index b50222e74..d7909e3b6 100644
--- a/js-api-spec/deprecations.test.ts
+++ b/js-api-spec/deprecations.test.ts
@@ -7,7 +7,10 @@ import {
   deprecations,
   Deprecation,
   Importer,
+  Value,
   Version,
+  SassColor,
+  SassNumber,
 } from 'sass';
 
 import {captureStdio, URL} from './utils';
@@ -226,3 +229,49 @@ describe('for a future deprecation,', () => {
     });
   });
 });
+
+describe('color deprecations', () => {
+  it('emit a warning outside of any compilation', () => {
+    const stdio = captureStdio(() => {
+      new SassColor({red: 255, green: 0, blue: 0, space: 'rgb'}).red;
+    });
+    expect(stdio.err).toContain('color-4-api');
+  });
+
+  it('emit a warning when compilation not silenced', () => {
+    const stdio = captureStdio(() => {
+      compileString('a { b: fn(red); }', {
+        functions: {
+          'fn($color)': (args: Value[]) =>
+            new SassNumber(args[0].assertColor().red),
+        },
+      });
+    });
+    expect(stdio.err).toContain('color-4-api');
+  });
+
+  it('emit no warning when silenced in current compilation', () => {
+    const stdio = captureStdio(() => {
+      compileString('a { b: fn(red); }', {
+        silenceDeprecations: ['color-4-api'],
+        functions: {
+          'fn($color)': (args: Value[]) =>
+            new SassNumber(args[0].assertColor().red),
+        },
+      });
+    });
+    expect(stdio.err).toEqual('');
+  });
+
+  it('throw an error when made fatal in current compilation', () => {
+    expect(() =>
+      compileString('a { b: fn(red); }', {
+        fatalDeprecations: ['color-4-api'],
+        functions: {
+          'fn($color)': (args: Value[]) =>
+            new SassNumber(args[0].assertColor().red),
+        },
+      })
+    ).toThrowError();
+  });
+});
diff --git a/js-api-spec/legacy/render.node.test.ts b/js-api-spec/legacy/render.node.test.ts
index ccff0a1cc..461b98025 100644
--- a/js-api-spec/legacy/render.node.test.ts
+++ b/js-api-spec/legacy/render.node.test.ts
@@ -505,6 +505,7 @@ describe('options', () => {
               file: dir('test.scss'),
               quietDeps: true,
               includePaths: [dir('dir')],
+              silenceDeprecations: ['legacy-js-api'],
             })
           );
           expect(stdio.out).toBeEmptyString();
@@ -523,6 +524,7 @@ describe('options', () => {
               file: dir('test.scss'),
               quietDeps: true,
               includePaths: [dir('dir')],
+              silenceDeprecations: ['legacy-js-api'],
             })
           );
           expect(stdio.out).toBeEmptyString();
@@ -566,6 +568,7 @@ describe('options', () => {
             file: dir('test.scss'),
             // data: '@import "other"',
             futureDeprecations: ['import'],
+            silenceDeprecations: ['legacy-js-api'],
           })
         );
         expect(stdio.out).toBeEmptyString();
@@ -583,6 +586,7 @@ describe('options', () => {
         const stdio = captureStdio(() =>
           sass.renderSync({
             file: dir('test.scss'),
+            silenceDeprecations: ['legacy-js-api'],
           })
         );
         expect(stdio.out).toBeEmptyString();
@@ -596,7 +600,7 @@ describe('options', () => {
       const stdio = captureStdio(() =>
         sass.renderSync({
           data: '$_: 1/2;',
-          silenceDeprecations: ['slash-div'],
+          silenceDeprecations: ['slash-div', 'legacy-js-api'],
         })
       );
       expect(stdio.out).toBeEmptyString();
@@ -691,6 +695,7 @@ describe('options', () => {
                     expect(message).toBe('heck debug');
                   },
                 },
+                silenceDeprecations: ['legacy-js-api'],
               },
               (err?: sass.LegacyException, result?: sass.LegacyResult) => {
                 if (err) {