With Proper Transparency Applied
Since, by default, Source Engine and its Hammer Editor only features two generic dev textures I have decided to add more of them and made sure they're as easy on the eyes as they are colorful!
I have also applied proper transparency so that 16x16 and 32x32 grids are differentiated, just like the two vanilla ones.
I will include the PSD file in case anybody wants to make their own. :)