She is most known for her colorful abstract works such as the two pictured here that almost look like a tile mosaic. “Thomas transposed the way she saw the world onto her vivid canvases through shards of shimmering color. Representing flowers, music, science, to the first man landing on the moon, and the invention of color television" (source).
I absolutely love the titles of her works - the painting below looks exactly like snow reflections on a pond, while also looking completely abstract at the same time. I believe it takes so much creativity to represent the essence of something without actually painting it directly.
If you want to learn more about her, check out this podcast episode: The Great Women Artists Podcast: Bridget R. Cooks on Alma Thomas.