--- a/dom/smil/test/db_smilCSSFromBy.js
+++ b/dom/smil/test/db_smilCSSFromBy.js
@@ -39,16 +39,28 @@ var _fromByTestLists =
     //   midComp  = (rgb(100, 100, 100) * 0.6 * 0.5 + rgb(300, 300, 300) * 1.0 * 0.5) * (1 / 0.8)
     //            = rgb(225, 225, 225)
     //
     //
     new AnimTestcaseFromBy("rgba(100, 100, 100, 0.6)", "rgba(240, 240, 240, 1)",
                            { midComp: "rgba(225, 225, 225, 0.8)",
                              toComp:  "rgb(255, 255, 255)"}),
   ],
+  // Bug 1457353: Change from nsColor to StyleComplexColor causes addition
+  // with currentcolor to break. Bug 1465307 for work to re-enable.
+  colorNoCurrentColor: [
+    new AnimTestcaseFromBy("rgba(10, 20, 30, 0.2)", "rgba(50, 50, 50, 1)",
+                             // (rgb(10, 20, 30) * 0.2 * 0.5 + rgb(52, 54, 56) * 1.0 * 0.5) * (1 / 0.6)
+                           { midComp: "rgba(45, 48, 52, 0.6)",
+                             // (rgb(10, 20, 30) * 0.2 + rgb(50, 50, 50) * 1) / 1.0
+                             toComp:  "rgb(52, 54, 56)"}),
+    new AnimTestcaseFromBy("rgba(100, 100, 100, 0.6)", "rgba(240, 240, 240, 1)",
+                           { midComp: "rgba(225, 225, 225, 0.8)",
+                             toComp:  "rgb(255, 255, 255)"}),
+  ],
   lengthNoUnits: [
     new AnimTestcaseFromBy("0", "50",  { fromComp: "0px", // 0 acts like 0px
                                          midComp:  "25px",
                                          toComp:   "50px"}),
     new AnimTestcaseFromBy("30", "10", { fromComp: "30px",
                                          midComp:  "35px",
                                          toComp:   "40px"}),
   ],
@@ -127,17 +139,19 @@ var gFromByBundles =
                                _fromByTestLists.lengthPx)),
   new TestcaseBundle(gPropList.font_size_adjust, [
     // These testcases implicitly have no effect, because font-size-adjust is
     // non-additive (and is declared as such in db_smilCSSPropertyList.js)
     new AnimTestcaseFromBy("0.5", "0.1"),
     new AnimTestcaseFromBy("none", "0.1"),
     new AnimTestcaseFromBy("0.1", "none")
   ]),
-  new TestcaseBundle(gPropList.lighting_color, _fromByTestLists.color),
+  // Bug 1457353: Change from nsColor to StyleComplexColor causes addition
+  // with currentcolor to break. Bug 1465307 for work to re-enable.
+  new TestcaseBundle(gPropList.lighting_color, _fromByTestLists.colorNoCurrentColor),
   new TestcaseBundle(gPropList.marker,         _fromByTestLists.URIsAndNone),
   new TestcaseBundle(gPropList.marker_end,     _fromByTestLists.URIsAndNone),
   new TestcaseBundle(gPropList.marker_mid,     _fromByTestLists.URIsAndNone),
   new TestcaseBundle(gPropList.marker_start,   _fromByTestLists.URIsAndNone),
   new TestcaseBundle(gPropList.overflow, [
     new AnimTestcaseFromBy("inherit", "auto"),
     new AnimTestcaseFromBy("scroll", "hidden")
   ]),