Light blues go well with almond and are very costal. You can go with a bright light blue or a blue with gray undertones too. Get some sample jars of colors you like and try them out.

Stop saying almond fixtures and think light tan. Now pick a color that doesn't wash out light tan and make it look dull and dirty! Grab chrome light fixtures and other accents for shine and bling.

For a coastal feel add bead board!

there are any number of tile murals to use as back splash or easy application and removable giant wallpaper murals. In addition a few knobs, not necessarily all, but the tops that are octopi, starfish, etc. not to mention shower curtains or bath mats, houzz alone has lots of things. First you need to decide what colors you like and how beachy you want, you have the whole all out or the indication -

Wall mural

one of a zillion tile murals, even by famous artists

I loved this one, and there were many other cute bath mats and maybe this is all you want. These pillows are not to put in there, but they give you an idea of the various color schemes, you will see they each go with at least one of these.

think there is even a shower curtain like this

calmer more sophisticated but much darker.

Above is brighter
I feel either just the almond and white or the aqua with the almond would both be very beachy without a word being said.

cream or almond, taupe and sage green

one or two other back splashes

above like water, below, actual shell, which is wonderful with the almond.

Oh and how someone used the mural in a smaller bathCan you imagine that feeling of sitting in the middle of the beach, feel like you are alone and far away that should do it.

let me know if you want to remove or help more.