Arthur: CSS Race colours from PA.

Signed-off-by: Martin Stone <martin@d7415.co.uk>
(cherry picked from commit 1d0a98f884a64592ab7a564d4e94113de14222f1)
Arthur: Tone down some CSS colours.

Signed-off-by: Martin Stone <martin@d7415.co.uk>
(cherry picked from commit 55e0d1f5f0ef8fcb1800c84e4cd18171d51e2268)