Bug 1393936: Use system color values for expanded icons  (#1224)
Bug 1393936: Use system color values for expanded icons  (#1224)

The Docker container selection dialog doesn't follow VS color themes, but was using VS Colors. This switches to using system colors.
orbitcowboy/MIEngine,orbitcowboy/MIEngine,orbitcowboy/MIEngine,orbitcowboy/MIEngine