The simplicity and clean UI make the game very approachable to all. I really enjoy the miscellaneous features within the game and the color selection of the bullets. One suggestion on the topic of visibility is to perhaps make the ship darker, or give the player the option to set the color of the ship. Perhaps implementing this for enemy ships as well could be beneficial just to ensure maximum accessibility.
Additionally, having short little descriptions for each ability in the shop could be nice just to know what it is exactly that you're purchasing prior to buying it. Apart from that thought, the game looks very well done.