Coloured BBs are useful to mix in with whites to identify different weights. I have about 5% green in .20, and 5% black in .25s for example. Helps avoid mixup when you destress and unload mags at days end.
Mixing sniper BBs could be an expensive mistake!
Whinging Arsehole was sent home from NZ about the time that Bonnie Blue was deported from Thailand (IIRC, I'm not Googling and getting her on my internet search history in case of heart attack etc). Since both make content for wankers to enjoy, there's a certain synchronicity there!
Look at work sallopettes on Ebay. They have lots of side pockets, hammer loops etc and come in OD. Strauss Workwear do similar. I've certainly had a few OD, earth coloured bits from them over the years for work (airsoft).