changing site logo/brand

can we make it easy for ppl to whitelabel the site to their own brand?

im assuming many partners wont want to brand it 'simple grants'..

we should have a .md doc that tells ppl:
1. how to update the logo in the top left
2. how to update site name
3. how to update color scheme

Start by locating where the logo, site name, and color scheme are defined in the site, then identify the configuration or files a partner would edit. Add a Markdown guide covering those three changes, with paths and verification steps; it is done when a partner can follow the guide to rebrand the site.

Written by the indexing model from the issue text.