My top three-
Chest rigs:
-TT MAV
-BLACKHAWK Recon Chest Harness or Eagle RRV
-DBT/BattleLab Low-Vis RACK
Armor Carriers:
-Paraclete RAV
-Eagle CIRAS (land, maritime, or LE carrier)
-DBT Predator line
Vests:
-TT Modular Vest
-BLACKHAWK Omega MOLLE vest
-AIRSAVE (TACAIR version)
LBV-style:
-ELCS or Paraclete equivalent
-MB Modular Medic Vest (CMVS)
- MOLLE II FLC
Plate Carriers:
-DBT Plate Carrier with RACK cummerbund
-Eagle Plate Carrier with cummerbund
-SOTech Callahan
Use different things, buy sell and trade, and you'll find what you like. After that, customization is key. Use what works, and toss what doesn't. You might also find yourself using more than one rig, funds permitting.
As for solid colors, my pick is Ranger Green. Foliage Green is a close second with tan, khaki, or coyote thereafter.
Good luck, there's lots of good kit on the market!