Aww, baptism day is such a special occasion! I usually go for something na elegant but comfortable pa rin, kasi alam mo naman ang hassle ng pagsisit with the baby the whole time haha, so a nice dress or filipiniana that doesn't restrict movement is perfect. A few of us moms prefer soft pastels or white since it's a religious event, pero honestly nakita ko rin kuya go with family colors or themes, just make sure baby's outfit coordinates naman so ang photos are cute! Check that shop link you posted, I haven't seen it yet pero I'm sure may magagandang options dun for the whole family!