Capitol Hill lawmakers want to change the color of money amid growing concerns about the federal deficit and the constant pressure for Washington to live within its means. The House and Senate each have introduced legislation that would replace the dollar bill with a $1 coin. “Change can be difficult,” Sen. Mike Enzi, R-Wyo., said. “But doing things as we’ve always done has contributed to our debt. We've got to latch on to any reasonable handhold we can find to climb out of this hole.” This is not the first time Washington has considered eliminating the paper dollar, which became...