Couple of things: First, the blown resistor may or may not be the root cause problem. It's possible that it sacrificed itself to protect whatever the true problem source was. So, you may replace this and maybe not fix the problem.
There should be more stripes on the resistor. These may be not identifiable due to scorch marks. The first green means "2". the last gold bar means "+/- 10%" and is the tolerance for the accuracy of the resistor value. You need two more bars from the first green end which are the next value for resistor (e.g. another green would, with the first then mean 22) and the next bar is 'power of ten' (which makes it a 2.2 ohm, or 22, or 2.2Kohm, etc. resistor). You can find the color code list with a simple web search.
Then there is the power handling level of the resistor (e.g. 1/4 watt, 1/2 watt, etc.). Look in Radio Shack (what few parts remain) for something of similar physical size and read off the wattage level for guidance.