THese are actually pretty nice tights.
http://www.mensswimsuitboard.com/for...9&d=1355054099
They might be a bit racier than what you had in mind, but they are available in more conservative colors than yellow. Just wear a pair of nylon running shorts over.
I find these on the Chinese aliexpress.com Web site You can do a search on mens tights there. THese are Seobean
http://www.aliexpress.com/item/Genui...503970550.html
Shipping generally is free and they arrive in US in your regular mail in about 3 weeks.