This is a hidden feature in vanilla Minecraft that many players forget. You can change the color of the crosshair to make it stand out against the background.
: Create or download a pack where the crosshair texture is located at assets/minecraft/textures/gui/icons.png .
tried a circle. It felt smooth for tracking fast-moving players during a heated bridge fight. Color Coding: changed the color to a vibrant Neon Green , ensuring it would never blend into the environment again. The Secret of Resource Packs
: A Forge-specific mod for 1.8.9 that allows you to draw your own crosshair or choose dynamic/rainbow styles.