Dear edward00
1. please send us the screenshot to clearer with this issue
2. i tried to select blue color it works normally
prntscr.com/h1njg0
3. i tried to select box setting, it works normally
prntscr.com/h1njrm
4. please send us the screenshot to clearer. please let's the name of the extension not work
5. because you are use the less compile, please edit css directly in .less file.
if no please disable it
prntscr.com/h1nk97 then edit directly in .css color file
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prntscr.com/h1nl7r
thanks