What color was Leia's lightsaber? Anyone know, please?

I know in the Thrawn series it was green but ive heard or read that it was blue at other times. Sooooo, which is it?

I think it's been green, blue, and purple at varying points; but it's most often blue, as I recall.

When she finally becomes a Jedi in the DNT Trilogy, it's blue from there onwards. I'm pretty sure she's used green and yellow in the past.

dang i was hoping it would be green like her brother's

Blue on one of the Legacy of the Force books

is it plain blue like anakin's or light blue or some other shade?

It's like Anakin's.

Her original lightsaber had a red blade, but it was destroyed during the YV War. Her second is blue when she completed her training under Saba.