Tarantula Nebula in the LMC some 50kpc away taken by Hubble. The blue pixels come from the most massive stars we've observed.
Abell S1063, the faint blue glow comes from billions of stars flung out as their host galaxies are shredded in a gravitational blender.
Angled pixel array manipulations of deep space using Mathematica.
Code: https://community.wolfram.com/groups/-/m/t/2222977 NASA/ESA/Crowther NASA/ESA/Montes