Shades of Darkness 16850 Oak Park Ave, Tinley Park, IL60477 Offering both tanning beds and spray tans, Shades of Darkness lives up to its name with their tiered system of tanning…More options. Returning customers can get a "one, two, or three" for 1/2 price on Saturdays, or $5 on Sundays. New customers are afforded the opportunity for a package deal, 7 consecutive tans for $7, which comes out to 1/8 the usual price. Shades is a small, family owned business and as such, appointments are suggested (though Walk-Ins are welcome), especially during the winter. Keep an eye out for promotional packages, which are available periodically.