Standard Shader EnableKeyword("_EMISSION") Not Working on Mobile

I've got a cube using a material with the standard shader, and I want to vary the Emission dynamically.

I'm doing it like this:
newMesh.material.EnableKeyword("_EMISSION");
newMesh.material.SetColor("_EmissionColor", emissionBlue);

and it works fine in the editor. However, it doesn't do anything when I build for iOS and Android (even when I set the quality settings to Fantastic). Furthermore, it used to work before I upgraded to 5.3.1f1.

Here's how my material looks:

 

Found a hacky solution. http://answers.unity3d.com/questions/970290/emission-at-run-time-works-in-editor-but-not-in-bu.html

 

The ShaderVariantCollection is the official way to get unity to not to stip shader variants that are used only at runtime but not included into the scene.

 

You probably also need to do this

renderer.material.globalIlluminationFlags = MaterialGlobalIlluminationFlags.RealtimeEmissive;