I just installed new ceramic tile and used a sanded light beige grout. Well it turns out that the color is to light when it dried and I wish i had got a darker grout. Can I get any type of sealer that will darken it up? When it was wet when applying it was the perfect color ahh well. Thanks for any replies...

A grout colorant will do the trick. You paint it on the grout and it also acts as a sealer to repel dirt and stains. The only time you cant use a colorant is if the grout has already been sealed. AquaMix makes a good one www.aquamix.com and also the Grout Dye Company www.groutdye.com They have a good site that can explain the process in greater detail and also answer other questions you have.