Nice observation Eric, Transits are great!
I miised last night due to lots of fog
I observed the ones Paul talked about on the 9th June, see my report here>
http://www.iceinspace.com.au/forum/s...ad.php?t=21015
On filters, I and others have found the light green works very well.
Try all colours as everyones eyes are not the same
Use what suits you, coloured filters can help in your observing of planets.