- Make all packages Expl3.

- Replace ifthen dependency with wrappers for Latex3 conditionals.
- Debug CrossRef and WrapBoxout.

packages/Color.sty

@@ -1,5 +1,7 @@
 \NeedsTeXFormat{LaTeX2e}
-\ProvidesPackage{PrimeTeX/packages/Color}[2025-07-09]
+\ProvidesExplPackage{PrimeTeX/packages/Color}{2025-09-18}{1.0}{
+	Color definitions.
+}
 
 % Split Complementary Color Scheme
 %    Primary Color: Blue
@@ -120,7 +122,7 @@
 	Orange,	fbefe9 % #fbefe9
 }
 
-\ifthenelse{\boolean{isDarkMode}\AND\boolean{isElectronic}}{
+\bool_if:nTF {\g_dark_mode_bool && \g_electronic_bool} {
 	% Page and text colors.
 	\colorlet{pageColor}{PrimeDarkGray}
 	\colorlet{textColor}{PrimePastelGray}
@@ -144,7 +146,7 @@
 
 	% Layout preview frame color.
 	\colorlet{layoutColor}{PrimeGray}
-}{
+} {
 	% Page and text colors.
 	\colorlet{pageColor}{white}
 	\colorlet{textColor}{black}