diff --git a/tests/css/parser/declarations-valid-26.css b/tests/css/parser/declarations-valid-26.css
new file mode 100644
index 0000000000..e49c23a35b
--- /dev/null
+++ b/tests/css/parser/declarations-valid-26.css
@@ -0,0 +1 @@
+* { color: red; background-color: transparent }
diff --git a/tests/css/parser/declarations-valid-26.ref.css b/tests/css/parser/declarations-valid-26.ref.css
new file mode 100644
index 0000000000..4baf392ba4
--- /dev/null
+++ b/tests/css/parser/declarations-valid-26.ref.css
@@ -0,0 +1,4 @@
+* {
+  background-color: rgba(0,0,0,0);
+  color: rgb(255,0,0);
+}