is there some sost of time limit within which to convert the colored maidsafe coins to safe coins or whichever it is?
Not as we know of today and I think they'll give everyone plenty of time to convert, in not unlimited.
also how does current price compare to ipo-price?
IPO price was 0.000042 so you get them cheaper now, however the market is so slim that it only takes 55BTC so push the price back to IPO price and around 80-90BTC so push the price two times of IPO price.