I'm looking to simplify my wardrobe, and the t-shirt is a staple. I like solid color t-shirts, and so the main differentiating factor is the color. But what color? There is only one way to find out. That is: create images of myself with different colored t-shirts, and evaluate them in an ELO-based arena.

Creating the images

I open an image of myself with a colored t-shirt in photopea. I select my t-shirt with Object Selection, and fill the selection on a new layer with the Color blend mode. I can now try on different colors with the color picker. I go from top to bottom on the hue slider, saving images as I go.

Generating the Arena app

I prompted O4 Mini with the following:

I have a folder with pictures of myself with different colors of tshirt. I want to have an "arena" where I choose my favorite between two pictures, and after enough comparisons, each image gets a score. The score should not be shown while picking, but there should be a button to display it. The scoring can be saved locally in the browser. I want this app as a single html file. I will host this with `npx serve`. The photos are located in a folder called 'images'.

Link to conversation

Success, after a quick fix!

Hosted with python3 -m http.server 8000, we got it up and running.

The results are in

My favorite was brown, and my wife ended up with blue. I have ordered 2 brown and 2 blue second-hand t-shirts to try out IRL. Experiment finished!

Written 2025-05-01