Hello. We have an older concrete patio that has some cracks (about 1/8") and discoloration due to someone's previous patch attempt. We've searched the internet for ideas to freshen it up without replacement, but haven't found much. We are thinking about cleaning the patio and then using two colors of stain (semi-transparent, non-etching) with a garden sprayer application to give it a cleaner look and take your eyes off of its blemishes. Any insights or other ideas would be greatly appreciated. Thank you for reading.