Fix/material expected

[himanshuc3]

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• Have you followed the guidelines in our Contributing document?
• [ x Have you checked to ensure there aren't other open Pull Requests for the same update/change?

New Feature Submissions:

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Changes

• Add Assert function for Material that has color as settable.
• If Scale is set as 0, change to a default of 0.000001 to stop warnings by THREE.js.

[lgtm-com]

This pull request introduces 1 alert when merging fe7cfa7 into 28c213a - view on LGTM.com

new alerts:

• 1 for Unused variable, import, function or class