To have matching gradients, you will have to use package 2.0.0-preview.25 with 6000.1.0a6 or above, which includes a matching fix for VectorImages. If you want to stick to an earlier versions of Unity, you can use 2.0.0-preview.24, but you may hit another bug where the gradient texture is in the wrong format in linear colorspace projects. Sorry for the confusing situation.