GNOME Color Manager has an optional feature of a 3D gamut graph in the advanced user profile viewer. It's really only useful for color geeks and drags in a whole heap of deps that nothing else in the stack uses.

If we remove clutter support for gnome-color-manager then we can remove both rply and libmash from rhel-7. These two packages have got a significant number of non-trivial multiarch bugs, and at this stage I think it's safer to just remove the tiny feature than waste time on the two other packages getting them to build correctly in RHEL.

This is the patch needed for gnome-color-manager:

diff --git a/gnome-color-manager.spec b/gnome-color-manager.spec
index 0b90366..a20f694 100644
--- a/gnome-color-manager.spec
+++ b/gnome-color-manager.spec
@@ -38,8 +38,6 @@ BuildRequires: libcanberra-devel
 BuildRequires: glib2-devel >= 2.25.9-2
 BuildRequires: docbook-utils
 BuildRequires: colord-devel >= 0.1.12
-BuildRequires: libmash-devel
-BuildRequires: clutter-gtk-devel
 BuildRequires: gnome-desktop3-devel
 BuildRequires: itstool
 BuildRequires: colord-gtk-devel
@@ -59,7 +57,7 @@ and generate color profiles in the GNOME desktop.
 %setup -q
 
 %build
-%configure --disable-scrollkeeper --disable-schemas-install
+%configure --disable-scrollkeeper --disable-schemas-install --disable-clutter
 make %{?_smp_mflags}

And only a simple rebuild is required after that.