SPPID_How to change white item into original color

Sometimes, after drawing crushed, some items changed into white color.

For example, the underground symbol was changed into white by some reasons.

Solution:

Click the item, then click construction status in the properties.You can find it is blank. pick up "New", then it will back to the original color. if it is underground item: pick up "New" first, then change back to "underground". it will works.