This is the killer feature. You can set Hudsight to automatically activate a specific crosshair when you launch Call of Duty and a different one when you open a Sniper Elite. You can also set hotkeys to toggle the overlay on the fly. This prevents the overlay from interfering with desktop work or cutscenes.
Support & resources
Hudsight supports RGBA color picking. You can choose standard colors, or create a high-visibility "outline" crosshair (e.g., a black crosshair with a white border). This ensures it is visible against any background—snow, sand, concrete, sky, or foliage. hudsight
A WYSIWYG (What You See Is What You Get) editor within the HUDSight app. This is the killer feature