Bake displacement to alpha channel washing out colour channels I'm trying to put a displacement map into the alpha channel of a normal map.  As per answer to question "Bake displacement to alpha channel" I am trying to use the Node editor for this purpose.  The result washes out the colour.  I have my problem demonstrated in a test case as follows.  I have two (RGB only) images: PaleBlue is coloured (0.5, 0.5, 1.0); DarkGrey is coloured (0.25, 0.25, 0.25).  I am trying to combine the colour channels of PaleBlue with the red from DarkGrey as alpha. The screen shot shows my results.  On the left are the two input images (RGB only).  In the middle is my node structure - a bit more complex than needed, but I think this explicitly shows what I want done.  On the right are two views of the output - actually the Viewer Node, but the Render Result is the same.  The top view is the colour component, the bottom the alpha channel.  Note that the colour is white - not pale blue and that the alpha channel is black.
First screen shot removed to be within link limit.

Question Update:  I've made the recommended change.  It improves my result, but still have somewhat washed out colour and 'brightened' alpha.


Question Update 2:  Here are views of a parallax mapping texture (obtained from other sources) and what it should look like in the image viewer.
Connect your image node to your Alpha inputs



If Im Looking strictly at the color values and ignoring the alpha, then the value results will be as follows:



And If you are looking to come at this from the polar opposite, then here is the result: