fltk/fltk

AI Summary: Debug and fix a bug in the FLTK library's `fl_overlay_rect()` function that causes incorrect drawing behavior with the Cairo graphics driver, specifically when used with Wayland and X11 backends. The issue involves ghosting of previously drawn rectangles and incomplete clearing. The task requires analyzing provided code, identifying the root cause of the problem within the `Fl_RGB_Image::draw()` function and its interaction with window contexts, and implementing a solution that ensures correct drawing and clearing of overlay rectangles across different backends.

AI Summary: Implement support for Wayland's color-management-v1 protocol in the FLTK library. This involves adding an API or hook to handle color management information from the Wayland compositor, allowing FLTK applications to correctly display HDR content on Wayland-based systems.