DES MOINES — State lawmakers think Iowa needs to upgrade the image that greets motorists along highway entry points at the borders.“I’m kind of embarrassed that when you come into Iowa at every different angle we’ve got different messaging,” said Sen. Carrie Koelker, R-Dyersville. “We’ve got Fields of Opportunities — that’s not even our state slogan anymore.”Koelker, who works in tourism and economic development when the Iowa Legislature is not in session, led a Senate Commerce subcommittee last week on a bill she introduced that seeks a $350,000 state general fund appropriation to remove Iowa’s current 68 highway welcome signs and replace them with new “different and distinct” message boards.“I filed this just to kind start the spark of conversation.