minetest/minetest — pull request #653 by EXio4 (2013-04-14 05:24:14+00:00)
Title: Ability to change the crosshair using textures (dannydark's code, tweaked a bit)

https://github.com/minetest/minetest/pull/306 with support for changing crosshair_color/alpha. and updated to the actual code.