Making alignment text color appear byblock requires a couple workarounds to get the display to work out correctly. Currently, the layer the text is set to in the label settings is the layer color that is displayed for the text. In order to get the alignment text object layer to control the color, you will need to make two adjustments – change the text layer to zero, and set the layer color to byblock. The settings you need to adjust are seen in the two screenshots on this post. Changing the text layer to zero forces the alignment text to adopt the properties of the block layer (a basic cad function with blocks).
