diff --git a/lib/CSSStyleDeclaration.test.js b/lib/CSSStyleDeclaration.test.js
index 9fa8ed3b..73c194b9 100644
--- a/lib/CSSStyleDeclaration.test.js
+++ b/lib/CSSStyleDeclaration.test.js
@@ -553,4 +553,20 @@ describe('CSSStyleDeclaration', () => {
     style.setProperty('width', 'calc(100% - 100px)');
     expect(style.getPropertyValue('width')).toEqual('calc(100% - 100px)');
   });
+
+  test('implements webkitTextFillColor', () => {
+    const style = new CSSStyleDeclaration();
+    style.setProperty('-webkit-text-fill-color', '#ffffff66');
+
+    expect(style.webkitTextFillColor).toEqual('rgba(255, 255, 255, 0.4)');
+  });
+
+  test('vendor property with cssText', () => {
+    const style = new CSSStyleDeclaration();
+    style.cssText = '-webkit-line-clamp: 20';
+
+    // TODO: this should be a number
+    expect(style.WebkitLineClamp).toEqual('20');
+    expect(style.getPropertyValue('-webkit-line-clamp')).toEqual('20');
+  });
 });
diff --git a/lib/allWebkitProperties.js b/lib/allWebkitProperties.js
index d6e71df6..57b2799b 100644
--- a/lib/allWebkitProperties.js
+++ b/lib/allWebkitProperties.js
@@ -191,4 +191,4 @@ module.exports = [
   'wrap-through',
   'writing-mode',
   'zoom',
-].map(prop => 'webkit-' + prop);
+].map(prop => '-webkit-' + prop);
diff --git a/scripts/generate_implemented_properties.js b/scripts/generate_implemented_properties.js
index caa88f12..0c21e969 100644
--- a/scripts/generate_implemented_properties.js
+++ b/scripts/generate_implemented_properties.js
@@ -9,8 +9,15 @@ const camelToDashed = require('../lib/parsers').camelToDashed;
 const dashedProperties = fs
   .readdirSync(path.resolve(__dirname, '../lib/properties'))
   .filter(propertyFile => propertyFile.substr(-3) === '.js')
-  .map(propertyFile => camelToDashed(propertyFile.replace('.js', '')));
-
+  .map(propertyFile => camelToDashed(propertyFile.replace('.js', '')))
+  .map(property => {
+    const isVendorSpecific = /^(o|moz|ms|webkit)-/.test(property);
+    if (isVendorSpecific) {
+      return '-' + property;
+    } else {
+      return property;
+    }
+  });
 const out_file = fs.createWriteStream(path.resolve(__dirname, '../lib/implementedProperties.js'), {
   encoding: 'utf-8',
 });
diff --git a/scripts/generate_properties.js b/scripts/generate_properties.js
index 33a42728..1298d28e 100644
--- a/scripts/generate_properties.js
+++ b/scripts/generate_properties.js
@@ -255,6 +255,10 @@ parsedFiles.forEach(function(file) {
 var propertyDefinitions = [];
 parsedFiles.forEach(function(file) {
   var dashed = camelToDashed(file.property);
+  var isVendorSpecific = /^(o|moz|ms|webkit)-/.test(dashed);
+  if (isVendorSpecific) {
+    dashed = '-' + dashed;
+  }
   propertyDefinitions.push(
     t.objectProperty(
       t.identifier(file.property),