For this PR (https://github.com/reactos/reactos/pull/1600) I used Photoshop CS6. You should make a 16-color image (use any colors, but only 16), then just switch to "Indexed colors" mode, choose your colors and save image as 4-bit (or 8-bit if not available) BMP. Then use Usenti to RESAVE it (Save As -> Choose File -> As 4-bit BMP), because Photoshop works bad with 4-bit images.
Last edited by Dz3n on Mon Jun 03, 2019 10:13 am, edited 1 time in total.