Painting the antenna can be done as long as the paint does not have any metallic content. Also, depending on the antenna, be sure that the radome of the antenna is not damaged by the content of the paint (petroleum based paints would likely damage this). I would think a water-based latex with no metallic contents would be totally acceptable, but Id still test on a small portion of the antenna first for potential decomposition of the radome. I did find this URL for a commercial antenna vendor you might find useful.
Transferring Crash file from standby: Login to the Active WLC in HA.
From CLI: (Cisco Controller) >transfer upload datatype crash (Cisco
Controller) >transfer upload filename (Cisco
Controller) >transfer upload mode tftp (Cisco Controller) >transfer
This is the start of a display filter cross reference between Wireshark
and OmniPeek. The 1st installment is a table of advanced filters. More
filters will be added as time allows. It is a living doc, so check back
for changes every so often Please feel f...