Yes, there is a way. However, if you go this way then all your changes would be overwritten in the next Chameleon update since you will need to modify the Chameleon’s own default material. Other than a “Radial Blur”, Chameleon also have an effect named “Masked Blur”. You can inspect this material and modify the “Radial Blur” by this way. But as i said earlier; if you choose to update Chameleon with next update, then it’ll reset all your modifications. I can add that masking feature to the “Radial Blur” effect if you can wait for the Unreal Engine 4.15 release. New version of the Chameleon will be released in that time.