What turned off my Conditional Build Tag (CBT) Colors?

Hello all,

I'm using RoboHelp 2015 (12.0.4.460) on Windows 10 x64 OS.

In my projects, I use multiple CBTs.

For example, here's the CBTs in one of my projects (our "Core" project).

Somehow, the CBT colors have stopped showing their colors inside RH's Design view across multiple projects.

For example:

But the CBT references are in place:

My .xpj file contains the references to both rhbuildtag.apj and rhcolor.apj:

Both .apj files exist in the projects:

The CBTs actually function when I build. It's just the colors don't appear inside of RH anymore.

Any idea on what's going on and how to fix it?

Many thanks in advance.