Here is the set I use. I made them myself they are just a bit different than the originals. I put more of a gradient on them so it changes from a dark color to a light color. The only one that I kept from the original 12 is August. Here they are tell me what you think of them. Note they aren't much different just a little better in my opinion.

January

February

March

April

May

June

July

August

September

October

November

December