need the kuid meaning

[robear]

from surveyor mode

there was three different colors on kuid at lower right.

yellow...

white...

red...

can anyone knows the colors represent what? just fill in after last dots in different color or letterings..so i can understands while working on project selecting item with kuid(highlighted in color)before place on.

thanks...sk...waiting.

 

[ct_krogen]

red mean, not on the dlsit is from a third party web site

yellow is built in
white isd/led from the dls