Changed chroma_threshold_sensitivity to more sensible default

Author: ramicaza

ViroRenderer/VROShaderFactory.cpp

@@ -899,7 +899,7 @@ std::shared_ptr<VROShaderModifier> VROShaderFactory::createChromaKeyModifier(int
     std::vector<std::string> modifierCode = {
             "uniform highp vec3 color_to_replace;",
 
-            "const highp float chroma_threshold_sensitivity = 0.4;",
+            "const highp float chroma_threshold_sensitivity = 0.1;",
             "const highp float smoothing = 0.1;",
             "highp float mask_y = 0.2989 * color_to_replace.r + 0.5866 * color_to_replace.g + 0.1145 * color_to_replace.b;",
             "highp float mask_cr = 0.7132 * (color_to_replace.r - mask_y);",