
Best solution for updating/coloring old grout
I thought this would be a good place to ask. I want to preserve my old teal bathroom, and the tile grout is stained in many places. (The lighting of this photo is not helping either)
Would a grout coloring pen be my best option? Anything I need to think about or do beforehand, besides scrubbing it clean? I've read about people sealing the tile afterwards, but not sure what the best product is to use, or if I even need to do that with this tile?
I've never done this or worked with tile before so any tips are appreciated!