openlayers/ol3 — pull request #2288 by fredj (2014-07-02 12:47:53+00:00)
Title: Mark the color argument to ol.color.transform non-nullable

Inside this function `goog.vec.Mat4.multVec3` is called and and its arguments must not be null (with recent version of the google closure library).

This PR and #2284 make the code base compatible with the latest version of the google closure library.