I've commented it in this stream. From 1:40:00 to 1:55:00
Viewing post in Blazing Duel jam comments
These are my shaders, but they are very easy to make. There are three properties: main texture, color A and color B set to HDR. The main texture is sampled, then with the "replace color" node I replace color A with color B. Combined with post processing bloom you get a really nice glow that you can adjust as you want.