In general there are a few rules when it comes to pot colour selection that are based around aesthetics in order that your bonsai trees are displayed to their advantage.
Selection tips
A Helpful Guide to Choosing the Right Pot for Your Bonsai
Kid's play or pot? – Bonsai Today
Bonsai pot colour guide
Kid's play or pot? – Bonsai Today
Border Concepts Small Ceramic Pottery, Orchid Pot, Pre-wired and pre-screened, Deeper than standard Bonsai Pots, Better drainage to prevent root
Border Concepts Professional Bonsai Pot w/ Saucer, 6.25-Inch (Styles & Colors Vary)
How to start winter bonsai in Japan - Japan Today
Bonsai pot colour guide
Gorgeous Bonsai with Very Attractive Pot in Green Color -Excellent Gift.. buy online plants and trees at pixies Gardens.