Warhammer 40,000 – Sometimes the simplest paint jobs are the best. Astra Militarum are the ground pounding basic infantry of the Imperium. Tanks and numbers are their claim to fame. Sadly you often seen these forces as a sea of grey. I'm not sure if its the color scheme or shear quantity of models but it's rare to see a fully painted Imperial Guard force.
One of the easiest ways to remedy the grey plague is to commission out your army. A simple three-color tournament standard can take your game to the next level. One of my most cost effective and popular options is 3C+wash, which is great for large forces or vehicle heavy forces. If you always planned on "painting" your army but never have the time this choice gets your force tabletop ready as well as providing a great starting point to detail out each piece.