How do I convince my husband???

The place we live we are only going to be here for 4 years, I'm an on site manager for a storage company, the tile in the bathroom is an ugly orange and the grout in the shower is cracking really bad and I'm concerned about a mold problem from that. So I'd like to paint the tiles with white paint and then caulk the where the tub meets the tile. Overall it would cost under 100 but he says he's not going to waste money making this place better when we aren't going to be here that long. I think 4-5 years like we'll be here Long enough and we still live here and it would look so much better and leave the place in good condition so we can get our deposit back. What would you say?

My company that I work for also supplies our apartment so it's all the same maintenance guys and they have so much to do because we have a lot of facilities so I don't think they'll have the time or extra stuff laying around to fix it.