Dark register for toe kick

We just had our kitchen remodeled. The cabinets we put in had to go over an existing floor register so we had to have our toe kick cut out to open up the vent. The hole cut is a 2x14 hole. Our cabinets our a dark deep color and we need a toe kick register to fit that opening. The problem is that the registers we find if they are wall registers don't have vent control or they are not very contemporary looking etc. The only ones I find I like are floor registers but they have no holes for screws or any way to attach to the wall or toe kick. What can a person do to make a floor register work?

I have found this but none have any screw holes to fit in my toe kick so I can secure it on. What would you propose I do?

I had the same situation at my brother's and my son's house.
I just drilled holes in the register to secure it to the toe kick.

david

I kind of figured that but just wanted to know what everyone else was doing and if there was an alternative to that. Thanks.