Had an excellent experience getting my patio pavers dyed from National Sealing Company. Pavers are 16 year old and most of the original colors have faded. They were very responsive to my questions, especial Kenny in regards to how their dyeing process worked. Mark did a great job blending the color of pavers that were under a hot tub for 16 years with the other pavers on the patio. Would definitely recommend the company.