Different colors when upgrading to 0.152.2

[PavelBoytchev]

@joda

After upgrading to 0.152.2, some really basic color things seem to be working in a weird way.

Updates to Color Management in three.js r152

The upcoming release r152 will contain changes affecting color and lighting. These updates enable a “linear workflow” by default, for better image quality in both physically-based and non-physically-based scenes. By “linear workflow”, we mean that any sRGB input colors (as found in most textures, color pickers, CSS, and HTML) are converted from sRGB to a linear working color space for rendering, and the rendered image is converted back to sRGB for display. What does that mean for me? These ch…