[CHORE] Clean up text and bg hex colors (#1685)

frontend/src/components/ContextualSaveBar/index.jsx

.../src/components/EmbeddingSelection/EmbedderItem/index.jsx

frontend/src/components/LLMSelection/LLMItem/index.jsx

.../src/components/Modals/DisplayRecoveryCodeModal/index.jsx

...eWorkspace/DataConnectors/Connectors/Confluence/index.jsx

...anageWorkspace/DataConnectors/Connectors/Github/index.jsx

...orkspace/DataConnectors/Connectors/WebsiteDepth/index.jsx

...nageWorkspace/DataConnectors/Connectors/Youtube/index.jsx

...s/ManageWorkspace/Documents/Directory/FolderRow/index.jsx

...ents/Modals/ManageWorkspace/Documents/Directory/index.jsx

frontend/src/components/Modals/Password/MultiUserAuth.jsx

frontend/src/components/Modals/Password/SingleUserAuth.jsx

...d/src/components/VectorDBSelection/VectorDBItem/index.jsx

frontend/src/components/lib/CTAButton/index.jsx

frontend/src/index.css

...pages/Admin/Agents/SQLConnectorSelection/DBConnection.jsx

...Admin/Agents/SQLConnectorSelection/NewConnectionModal.jsx

...in/Agents/WebSearchSelection/SearchProviderItem/index.jsx

frontend/src/pages/Admin/Agents/WebSearchSelection/index.jsx

...pages/GeneralSettings/Appearance/CustomMessages/index.jsx