This mod changes absolutely all the weapon icons, be it GTA IV or EFLC, for others of much better quality Credits to RollY for creating these icons. I supported the creation of colored icons based on the icons created by him.
Installation:
Weapons:
Open SparkIV or OpenIV;
Browse to C:\Program Files/Rockstar Games/Grand Theft Auto IV/pc/models/cdimages/weapons.img or C:\Program Files (x86)\Steam\steamapps\common\Grand Theft Auto IV\GTAIV;
Select the weapon you want in the bottom of the list (for example mp5.wtd);
Then click on Edit and select the file named Icon;
Change the icon you want by importin the new one;
Click on Save and Close then save again and it's done!
Fist (hand):
Browse to C:/Program Files/Rockstar Games/Grand Theft Auto IV/pc/textures/hud.wtd with SparkIV or OpenIV;
Click on Edit, and change the files throw_icon, fist_icon and dropgrenade_icon by the new ones;
Click on Save and Close then save again and it's done!