magnifier: Stop using Clutter.StaticColor
This was removed from mutter in commit 72c2d8913. Instead of manually creating a white color, we can just rely on ClutterTextureNode creating one for us when passing null.
Closes: #7480 (closed)
This was removed from mutter in commit 72c2d8913. Instead of manually creating a white color, we can just rely on ClutterTextureNode creating one for us when passing null.
Closes: #7480 (closed)