BOM item catagery material..?

Hi gurus,

when i do sales order VA01 with BOM material (non sotck ) only price it s appearing in gray colour.

but below components are not appearing in gray colour. and it s having different Item catagery with Z.

how to get the Components (stok material ) line item should be in Gray color. so thet w

Thanksin advance,

Anthyodaya.