We have a thermostat that only has 2 wires, red and white coming out of the wall, and we want to change it to a digital thermostat with slots of W2, G, E, Y, C, B O, R or we also have a unit that has slots W1, G, Y, C, B, O, R

So my question is this: Are we able to use either of the 2 new thermostats in place of the current ugly one we have?