Warning: not very tested, and there might be a couple problems with the light theme.

{"slate":{"25":"#fffaf3","50":"#faf4ed","100":"#dfdad9","200":"#cecacd","300":"#cecacd","400":"#cecacd","500":"#797593","600":"#575279","700":"#575279","800":"#575279","900":"#575279","950":"#575279"},"zinc":{"50":"#e0def4","100":"#e0def4","200":"#e0def4","300":"#e0def4","400":"#908caa","500":"#908caa","600":"#524f67","700":"#524f67","800":"#524f67","900":"#26233a","925":"#1f1d2e","950":"#191724"},"primary":{"100":"#e0def4","900":"#575279"},"other":{"black":"#26233a","white":"#f2e9e1"}}

Edit: fixed read posts looking the same as unread posts