I don't like the new tiny icons in .74. I can hardly see them. I made them bigger. This includes all vehicles, friendly and enemy, as well as blue, colorblind, and platoon icons.
Simply copy the .SWF to your World_of_Tanks\res_mods\0.7.4\gui\flash\ folder and you're good to go. They made me zip the file to upload it, so I included the \0.7.4\gui\flash\ bit in the zip, so now, just unzip with \res_mods\ as the target folder and that should do it.
Updated for .75

