We don't have any other /*bg aliases except /dbgt -> dragon ball gt, so let's make use of them to shorten the various *_background tags which are quite cumbersome to type.
Basics
/sbg -> simple_background
/tbg -> transparent_background
/gbg -> gradient_background
/htbg -> halftone_background
/wbg -> white_background (most common example, no conflicts)
Colors
/whitebg-> white_background (for orthogonality)
/greybg -> grey_background
/blackbg -> black_background
/brownbg -> brown_background
/pinkbg -> pink_background
/redbg -> red_background
/orangebg -> orange_background
/yellowbg -> yellow_background
/greenbg -> green_background
/aquabg -> aqua_background
/bluebg -> blue_background
/purplebg -> purple_background
Most Common Patterns
/argylebg -> argyle_background
/checkeredbg -> checkered_background
/floralbg -> floral_background
/photobg -> photo_background
/polkadotbg -> polka_dot_background
/stripedbg -> striped_background
Some of these are cumbersome in themselves. Perhaps...
/argbg -> argyle_background
/checkbg -> checkered_background
/pdbg -> polka-dot_background
Also, we need the following aliases for the other common US spelling:
/graybg -> grey_background
gray_background -> grey_background
Updated by jxh2154