It does exactly what the name says. Works in both light and dark mode.
Fix the blue button BS by muffinV136

Details
AuthormuffinV136
LicenseNo License
Categoryroblox.com, Roblox
Created
Updated
Code size965 B
Code checksum57d63c26
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Description
Notes
Doesn't work in all places yet. Let me know where you find some blue that shouldn't be there.
Source code
/* ==UserStyle==
@name Fix the blue button BS
@namespace github.com/openstyles/stylus
@version 1
@description Does what the name says.
@author muff1n36
==/UserStyle== */
@-moz-document domain("roblox.com"){.dark-theme .btn-common-play-game-lg,.dark-theme .btn-common-play-game-lg:focus,.dark-theme .btn-common-play-game-lg:hover,.light-theme .btn-common-play-game-lg,.light-theme .btn-common-play-game-lg:focus,.light-theme .btn-common-play-game-lg:hover,.dark-theme .filters-container .filter-items-container .filters-modal-container .action-buttons-container .apply-button, .light-theme .filters-container .filter-items-container .filters-modal-container .action-buttons-container .apply-button, .dark-theme .btn-growth-sm, .light-theme, .btn-growth-sm {background-color:#00c45e}
.dark-theme .icon-radio-check-circle-filled, .light-theme .icon-radio-check-circle-filled {
border: 6px solid #00c45e
}
}