make sure you etch it properly and fully first. maybe even a few times.
for spreading the color chips we used a grass seed spreader. the over the shoulder bag type.
prep is key. de grease, etc. let dry, and let the coating in between dry properly.
there are a one part epoxy from PPG that you could use. however i would recommend you use the marine coating, it's what we used in the fire stations, and school auto shops.
they have bags of a clear silica sand for traction to make them none slip. you can mix into the product or broadcast on top of wet flooring.