Parsed palette colors before initializing the GTK3 color chooser dialog to ensure RGBA normalization.
Switched GTK3 GtkCellRendererText foreground bindings to foreground-rgba with GTK2 fallbacks in user list, notify, and DCC views.
Generated GTK3 caret-color CSS using GdkRGBA string conversion instead of manual RGB math for input styling.
Simplified palette RGB16 parsing by building a GdkRGBA-compatible color string before parsing.
Updated GTK3 list-model color storage and GtkCellRendererText foreground properties to use RGBA values in the user list, notify list, and DCC views while retaining GTK2 behavior.
Copied palette RGBA values before initializing the GTK3 color chooser dialog to ensure RGBA usage on the GTK3 path.
Copy RGBA values from the GTK color chooser into palette entries for the setup dialog path.
Added RGBA-aware list-store color helpers and usage for userlist, notify, and DCC views to keep color handling consistent across GTK versions.
Updated setup color selection and styling to use RGBA-aware GTK3 overrides/CSS while preserving GTK2 behavior in guarded paths.
Switched tree view color models/renderers and other palette consumers (user list, notify, DCC, menus, spell entry, input style) to RGBA-aware types/properties with shared RGB16 conversion usage.
This is the first step to build with GSEAL_ENABLE
setup.c uses a deprecated fontchooser,
chanview-tabs.c didn't like the conversion, and
I am waiting to do some work on xtext.c before
converting it.
