SmoothBackgrounds.css

/* "Smooth Backgrounds v1.2" by Hebgbs, originally by Zerthx */
/* Make the background really clear & more smooth via root variables.

Add these into the theme root block;
    --smoothBG_L: 0.00;
    --smoothBG_D: 0.00;

For real-time modification in Custom CSS, place the variables in their own
root block, using the root block from your ClearVision theme as an example.

Change "0.00" to any value you like; one is for lightappearance, the other
is for dark, but thay can be both the same if you don't care. */

.theme-light .guilds-wrapper,
.theme-light .channels-wrap,
.theme-light .content .flex-spacer,
.theme-light .title-wrap,
.theme-light .channel-members,
.theme-light .search-results-wrap,
.theme-light .friends-header,
.theme-light .friends-table{
    background-color: rgba(0, 0, 0, var(--smoothBG_L)) !important;}

.theme-dark .guilds-wrapper,
.theme-dark .channels-wrap,
.theme-dark .content .flex-spacer,
.theme-dark .title-wrap,
.theme-dark .channel-members,
.theme-dark .search-results-wrap,
.theme-dark .friends-header,
.theme-dark .friends-table{
    background-color: rgba(0, 0, 0, var(--smoothBG_D)) !important;}