How add/change colors form palets for border shapes

Hi All! I using of this project, but I have problem with set color border. I can't choosing light grey from pallets color. I have opportunities only choose dark grey, but is opportunitie set color for font: dark and ligh grey. Why there aren't set that same for font and border? I didn't know how made shape with light grey.

Link to img screenshot: https://postimg.cc/HVX0NxMk (edited)

I used project from: https://www.figma.com/community/file/1157625510956011362