Pack color in TXTBasedAtomTypeConfigurator.

Change-Id: Ia6c91152d42c3f8d2d176bbf122b5d8ee7921f7c
Signed-off-by: Egon Willighagen <egonw@users.sourceforge.net>
Moved IAtomColorer from the interfaces to the render module

Change-Id: Ie560b864f0123a848fe160da627b3d8d058984ee