I was at Aberdeen earlier this year (see some photos I took in the gallery) that Bradley has been stripped and repainted a gloss desert sand color, replicating a Desert Storm pattern. I did not take photos of it since I have that type of vehicle at my work.
As far as base access, it may be a while before visitors get regular access to military bases. Most likely for specific events like an open house, air show, 4th of July fire works, etc. when security can be beefed up for a specific short-term duration.