diff --git a/src/Twig/Functions/IconExtension.php b/src/Twig/Functions/IconExtension.php
index a7ca8a5..2ed7922 100644
--- a/src/Twig/Functions/IconExtension.php
+++ b/src/Twig/Functions/IconExtension.php
@@ -179,12 +179,12 @@ final class IconExtension extends AbstractExtension
 
     private function removeBlackStrokeAttributes(string $content): string
     {
-        return preg_replace('/stroke="\s*(#0{6}|#000|rgb\(\s*0,\s*0,\s*0\s*\)|black)\s*"/', '', $content);
+        return preg_replace('/stroke(=|:)"?\s*(#0{6}|#000|rgb\(\s*0,\s*0,\s*0\s*\)|black)\s*"?/', '', $content);
     }
 
     private function removeBlackFillAttributes(string $content): string
     {
-        return preg_replace('/fill="\s*(#0{6}|#000|rgb\(\s*0,\s*0,\s*0\s*\)|black)\s*"/', '', $content);
+        return preg_replace('/fill(=|:)"?\s*(#0{6}|#000|rgb\(\s*0,\s*0,\s*0\s*\)|black)\s*"?/', '', $content);
     }
 }
 
diff --git a/tests/Twig/Functions/IconExtensionTest.php b/tests/Twig/Functions/IconExtensionTest.php
index 7dcf618..92dea2d 100644
--- a/tests/Twig/Functions/IconExtensionTest.php
+++ b/tests/Twig/Functions/IconExtensionTest.php
@@ -200,6 +200,15 @@ class IconExtensionTest extends TestCase
         $this->assertDoesNotMatchRegularExpression('/stroke="\s*rgb\(0,\s*0,\s*0\)\s*"/', $content);
     }
 
+    public function testBlackStrokeStylesAreRemoved(): void
+    {
+        $content = $this->icon->renderIcon(['icon' => self::ICON]);
+        $this->assertDoesNotMatchRegularExpression('/stroke:\s*#000\s*/', $content);
+        $this->assertDoesNotMatchRegularExpression('/stroke:\s*#000000\s*/', $content);
+        $this->assertDoesNotMatchRegularExpression('/stroke:\s*black\s*/', $content);
+        $this->assertDoesNotMatchRegularExpression('/stroke:\s*rgb\(0,\s*0,\s*0\)\s*/', $content);
+    }
+
     public function testBlackFillAttributeValuesAreRemoved(): void
     {
         $content = $this->icon->renderIcon(['icon' => self::ICON]);
@@ -209,6 +218,15 @@ class IconExtensionTest extends TestCase
         $this->assertDoesNotMatchRegularExpression('/fill="\s*rgb\(0,\s*0,\s*0\)\s*"/', $content);
     }
 
+    public function testBlackFillStylesAreRemoved(): void
+    {
+        $content = $this->icon->renderIcon(['icon' => self::ICON]);
+        $this->assertDoesNotMatchRegularExpression('/fill:\s*#000\s*/', $content);
+        $this->assertDoesNotMatchRegularExpression('/fill:\s*#000000\s*/', $content);
+        $this->assertDoesNotMatchRegularExpression('/fill:\s*black\s*/', $content);
+        $this->assertDoesNotMatchRegularExpression('/fill:\s*rgb\(0,\s*0,\s*0\)\s*/', $content);
+    }
+
     public function testThrowsIfPalleteIsNotFound(): void
     {
         $this->expectException(PalleteNotFound::class);
diff --git a/tests/icons/test.svg b/tests/icons/test.svg
index 9a2211c..c3858b2 100644
--- a/tests/icons/test.svg
+++ b/tests/icons/test.svg
@@ -6,4 +6,5 @@
     <line fill="black"></line>
     <line x1="256" y1="112" x2="256" y2="400" width="101" height="101" style="fill: none; stroke: rgb(0,0, 0); stroke-linecap: round; stroke-linejoin: round; stroke-width: 32px;"></line>
     <line x1="400" y1="256" x2="112" y2="256" width="102" height="102" style="fill: none; stroke: #000; stroke-linecap: round; stroke-linejoin: round; stroke-width: 32px;"></line>
+    <polyline points="112 244 256 100 400 244" style="fill:#000;fill:#000000;fill: black;fill:rgb(0,0,0);stroke:#000;stroke:#000000;stroke:black;stroke:rgb(0, 0, 0);stroke-linecap:round;stroke-linejoin:round;stroke-width:48px"/>
 </svg>