What are some standard matching 'rules' I should consider when choosing which cap to wear? I have baseball caps in all the basic colors, white, black, navy blue, and grey (no logos). -
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YESTUNE Washed Mesh Multi-Colors to Choose Baseball Cap, Fashion Unisex Adjustable Sun Hat Visor Cap Mountaineering Sunhat - Walmart.com
![Amazon.com: Washed Baseball Cap Spring and Summer Hat 3D Embroidered Alphabet Baseball Cap Men's and Women's Cap (Color : Grey, Size : Adjustable) : Clothing, Shoes & Jewelry Amazon.com: Washed Baseball Cap Spring and Summer Hat 3D Embroidered Alphabet Baseball Cap Men's and Women's Cap (Color : Grey, Size : Adjustable) : Clothing, Shoes & Jewelry](https://m.media-amazon.com/images/I/61TYVOJvKEL.jpg)